3x-(7x+7)=4x-31

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Solution for 3x-(7x+7)=4x-31 equation:


Simplifying
3x + -1(7x + 7) = 4x + -31

Reorder the terms:
3x + -1(7 + 7x) = 4x + -31
3x + (7 * -1 + 7x * -1) = 4x + -31
3x + (-7 + -7x) = 4x + -31

Reorder the terms:
-7 + 3x + -7x = 4x + -31

Combine like terms: 3x + -7x = -4x
-7 + -4x = 4x + -31

Reorder the terms:
-7 + -4x = -31 + 4x

Solving
-7 + -4x = -31 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-7 + -4x + -4x = -31 + 4x + -4x

Combine like terms: -4x + -4x = -8x
-7 + -8x = -31 + 4x + -4x

Combine like terms: 4x + -4x = 0
-7 + -8x = -31 + 0
-7 + -8x = -31

Add '7' to each side of the equation.
-7 + 7 + -8x = -31 + 7

Combine like terms: -7 + 7 = 0
0 + -8x = -31 + 7
-8x = -31 + 7

Combine like terms: -31 + 7 = -24
-8x = -24

Divide each side by '-8'.
x = 3

Simplifying
x = 3

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