| Solution : | 15-1x=8 -1x = 8 - 15 -1x = -7 -1x / -1 = -7 / -1 x = 7 |
For 15-1x=8, group like terms on each side of the equal sign. and isolate the "-1X" term on one side of the equation by adding or subtracting to combine like terms across the equal sign. Finally divide both sides of the equation by the -1 to solve for "x".
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