2007-09-13 05:45:45 · 16 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
2 + 8x = 5x + 23
3x = 21
x = 7
2007-09-14 19:50:20 · answer #1 · answered by Como 7 · 0⤊ 0⤋
2 + 8x = 5x + 23, or 3x = 21, so x = 7
2007-09-13 12:52:05 · answer #2 · answered by John V 6 · 1⤊ 0⤋
2(1+4x)=5x+23
2 + 8x = 5x +23
8x -5x = 23 - 2
3x = 21
x = 21 / 3 = 7
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2007-09-13 13:16:33 · answer #3 · answered by Joymash 6 · 0⤊ 0⤋
2(1+4x)=5x+23
2+8x=5x+23
3x=21 (combine like terms)
x=7
2007-09-13 12:58:22 · answer #4 · answered by Eric 2 · 0⤊ 0⤋
Solve for the "x" variable in the equation.
2(1+4x) = 5x+23
First: eliminate parenthesis - use the distribution method.
2(1)+2(4x) = 5x+23
2 + 8x = 5x + 23
Sec: combine "like" terms - subtract 5x from both sides (when you move a term to the opposite side, always use the opposite sign).
2 + 8x-5x = 5x -5x+ 23
2 + 8x-5x = 23
2 + 3x = 23
Sec: subtract 2 from both sides.
2 - 2+ 3x = 23 - 2
3x = 23 - 2
3x = 21
Third: solve for "x" by isolating it on one side - divide both sides by 3.
(3x)/3 = (21)/3
x = (21)/3
x = 7
2007-09-13 12:55:48 · answer #5 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
2 * (1 + 4x) = 5x + 23.
2 + 8x = 5x + 23. (Multiply by 2 on left side)
3x = 21. (Move x's and constants to opposite sides)
x = 7.
2007-09-13 12:52:36 · answer #6 · answered by RustyL71 4 · 0⤊ 0⤋
2(1+4x) expands to 2+8x, therefore
2+8x=5x+23
2+3x=23
3x=21
x=7
2007-09-13 12:53:30 · answer #7 · answered by john s 2 · 0⤊ 0⤋
21
2007-09-17 12:22:24 · answer #8 · answered by Anonymous · 0⤊ 0⤋
2(1+4x)=5x+23
2+8x=5x+23
8x-5x=23-2
3x=21
x=21/3
x=7
2007-09-16 08:15:40 · answer #9 · answered by r wall 3 · 0⤊ 0⤋
2(1+4x)=5x+23
2+8x=5x+23
8x-5x=23-2
3x=21
x=21/3
x=7
2007-09-13 13:05:26 · answer #10 · answered by Divi 2 · 0⤊ 0⤋