3x-(-4x+7)=8

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Solution for 3x-(-4x+7)=8 equation:


Simplifying
3x + -1(-4x + 7) = 8

Reorder the terms:
3x + -1(7 + -4x) = 8
3x + (7 * -1 + -4x * -1) = 8
3x + (-7 + 4x) = 8

Reorder the terms:
-7 + 3x + 4x = 8

Combine like terms: 3x + 4x = 7x
-7 + 7x = 8

Solving
-7 + 7x = 8

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '7' to each side of the equation.
-7 + 7 + 7x = 8 + 7

Combine like terms: -7 + 7 = 0
0 + 7x = 8 + 7
7x = 8 + 7

Combine like terms: 8 + 7 = 15
7x = 15

Divide each side by '7'.
x = 2.142857143

Simplifying
x = 2.142857143

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