2(x -1) + 3 = X – 3(x + 1)
2x-2 +3 = x - 3x-3
2x + 1 = -2x -3
2x + 2x = -3 - 1
4x = -4
4x/4 = -4/4
x = -1
To check your answer plug -1 in the place of x in the main equation:
2(-1-1) + 3 = -1-3(-1+1)
-4 + 3 = -1
-1 = -1
Thus x = -1 is the correct answer.
2006-06-30 09:14:13
·
answer #1
·
answered by organicchem 5
·
0⤊
0⤋
2(x-1)+3=x-3(x+1)
2x-2+3=x-3x-3 combine like terms
2x+1=-2x-3 add 3 to both sides
2x+4=-2x now subtract 2x from both sides
4=-4x divide both sides by -4
x=-1 you can check the answer by substituting
-1 for x. Do both equations seperately and
if you have the right answer both equations
will equal the same number.
2(-1-1)+3= -1
-1-3(-1+1)=-1
2006-06-30 09:28:56
·
answer #2
·
answered by scheerbarbara 1
·
0⤊
0⤋
2(x - 1) + 3 = x - 3(x + 1)
2x - 2 + 3 = x - 3x -3
2x + 1 = -2x -3 (add 2x to both sides)
4x + 1 = -3 (subtract 1 from both sides)
4x = -4 (divide by both sides by 4)
x = -1
Proof:
2((-1) - 1) + 3 = -1 - 3((-1) + 1)
2(-2) + 3 = -1 - 3(0)
-4 + 3 = -1 - 0
-1 = -1 CHECK
2006-06-30 18:34:40
·
answer #3
·
answered by CSUFGrad2006 5
·
0⤊
0⤋
2x-1=-2
-2+3=-5
-5 mines 3 =-2
-2 x +1=-1
2006-06-30 09:22:27
·
answer #4
·
answered by jojo 2
·
0⤊
0⤋
First you need to remove the parentheses with the distributive property:
2(x)-2(1)+3=X-3(x)-3(1)
simplify to get:
2x-2+3=x-3x-3
combine like terms to get:
2x+1=-2x-3
add 2x to both sides and you're left with:
4x+1=-3
subtract 1 from both sides and you get:
4x=-4
divide both sides by 4 to get:
x=-1
Hope this helps!
2006-06-30 09:50:40
·
answer #5
·
answered by quickster94 3
·
0⤊
0⤋
2(x-1)+3=x-3(x+1);
2x-2+3=x-3x-3;
2x-x+3x=-3+2-3;
4x=-4;
x=-1;
for nikkig813 ---> -2+3 doesn't equal 5 >study more math then solve simple problems online ;)
2006-06-30 09:17:35
·
answer #6
·
answered by Yoda 2
·
0⤊
0⤋
2(x-1)+3=-3(x+1)
2x-2+3=-3x-3
+2 +2
2x+5=3x-3
-2x -2x
5=x-3
+3 +3
8=x
2006-06-30 10:35:05
·
answer #7
·
answered by Anonymous
·
0⤊
0⤋
2(x-1)+3 = x-3(x+1)
2x-2+3 = x-3x-3
2x+1 = -2x-3
4x+1 = -3
4x = -4
x = -4/4
x = -1
2006-06-30 09:41:12
·
answer #8
·
answered by James K 1
·
0⤊
0⤋
2(x-1)+3=x-3(x+1)
Multiply out the parentheses to get:
2x-2+3=x-3x-3
Combine like terms...
2x+1= -2x-3
Subtract the one...
2x= -2x-4
Add the -2x to the other side...
4x= -4
Divide by 4 to get x by itself...
(4x)/4=(-4)/4
And you have x alone!
x= -1
You can check this by substituting -1 in for x and doing the equation to see if both sides are equal.
2006-06-30 09:25:51
·
answer #9
·
answered by kellsbells 2
·
0⤊
0⤋
2(x-1)+3=X-3(x+1)
2x - 2 + 3 = X - 3x -3
2x + 1=X - 3x - 3
2x + 3x=X - 4
5x - X = -4
4x = -4
x = -4/4
x = -1
2006-06-30 09:30:52
·
answer #10
·
answered by manas_3312 1
·
0⤊
0⤋