4(2x + 5) = - 36
2x + 5 = - 9
2x = - 14
x = - 7
2007-12-16 05:30:22
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answer #1
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answered by Como 7
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implifying
-25 + 4(2x + 5) = -61
Reorder the terms:
-25 + 4(5 + 2x) = -61
-25 + (5 * 4 + 2x * 4) = -61
-25 + (20 + 8x) = -61
Combine like terms: -25 + 20 = -5
-5 + 8x = -61
Solving
-5 + 8x = -61
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '5' to each side of the equation.
-5 + 5 + 8x = -61 + 5
Combine like terms: -5 + 5 = 0
0 + 8x = -61 + 5
8x = -61 + 5
Combine like terms: -61 + 5 = -56
8x = -56
Divide each side by '8'.
x = -7
Simplifying
x = -7
2007-12-13 10:37:42
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answer #2
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answered by Anonymous
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Step 1:-25+4(2x+5)= - 61
Step 2: -25+25+4(2x+5)=-61+25
Step 3: 4(2x+5)=-36 {the 25s cancel each other out}
Step 4: 8x+20=-36
Step 5: 8x+20-20=-36-20
Step 6: 8x=-56 {divide each side by 8}
Step 7: x=-7
Isnt it funny how we all did it different ways but we all came up with the same answer? proof that math isnt an exact science
2007-12-13 10:43:24
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answer #3
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answered by Anonymous
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you have to expand the stuff in the brackets first:
4(2x + 5) = 8X + 20
and then combine like terms -- move all the constants to the Right Hand Side and leave the variable (8x) on the left:
8x = -61 + 25 - 20
8x = -56
x = -7
2007-12-13 10:39:47
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answer #4
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answered by skitzafrennikztuff 2
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-25+4(2x+5)= -61
-25+8x+20= -61
8x-5= -61
8x= -56
x = -7
2007-12-13 10:38:30
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answer #5
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answered by Lady Lefty 3
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-25 + 4(2x+5) = -61
add 25 to both sides
4(2x+5) = -36
divide both sides by 4
2x+5 = -9
subtract 5 from both sides
2x = -14
divide both sides by 2
x = -7
ta-da!
2007-12-13 10:40:18
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answer #6
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answered by MathNerd 4
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Add 25 to the right and left sides
4(2x+5)=-36
Divide by 4
2X+5=-9
Subtract 5
2X=-14
Divide by 2
X=-7
2007-12-13 10:37:55
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answer #7
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answered by Anonymous
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-25 + 4(2x+5) = -61
4(2x+5) = -36
2x + 5 = -9
2x = -14
x = -7
2007-12-13 10:38:10
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answer #8
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answered by dogsafire 7
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-25+4(2x+5)= - 61
4(2x+5)= - 61+25
4(2x+5)=-36
(2x+5)=-36/4
(2x+5)=-9
2x+5=-9
2x=-9-5
2x=-14
x=-14/2
x=-7
2007-12-13 10:37:26
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answer #9
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answered by Siva 5
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distrubute
-25+8x+20=-61
-5+8x=-61
+5 +5
8x=-56/8
/8
x=-7
2007-12-13 10:39:46
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answer #10
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answered by ihrtshchr 3
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