8x-1 = 7x+2
Add 1 to both sides: 8x = 7x+3
Subtract 7x from both sides: 1x = 3 ie x = 3
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-8x+7 = -7x-2 -8x = -7x-2-7 -8x=-7x-9 -8x+7x=-9 -1x=-9 x=-9/-1 x=9
-7x + 6 + 7x - 2 = 4
The equation can be solved by isolating the variables from the numbers. The answer would be 4x = 8, which equals 2.
The 7x and the 5x are like terms. This means that you can add them up. Think about it, 7 x's plus 5x's equals 12x's. From there, you can divide 12 from both sides of the equation, and you will get that x = 2.