4X - 7 = 2X + 5
subtract 2X from each side
4X - 2X - 7 = 2X - 2X + 5
2X - 7 = 5
add 7 to each side
2X - 7 + 7 = 5 + 7
2X = 12
divide both sides integers by 2
(2/2)X = 12/2
X = 6
--------------check in original equation
4(6) - 7 = 2(6) + 5
24 - 7 = 12 + 5
17 = 17
-----------checks
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If your question was 2X + 5 =10. X equals what? Then X=2.5
2x-11
-3x + (-18) = 2x + 7 +18 +18 -3x = 2x +25 -2x -2x -5x = 25 ----- ----- -5 -5 x=-5 *------- equals a division line
x equals 4
4x - 5 + 2x = 37