7x-(3x+7)=5(x-4)

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Solution for 7x-(3x+7)=5(x-4) equation:


Simplifying
7x + -1(3x + 7) = 5(x + -4)

Reorder the terms:
7x + -1(7 + 3x) = 5(x + -4)
7x + (7 * -1 + 3x * -1) = 5(x + -4)
7x + (-7 + -3x) = 5(x + -4)

Reorder the terms:
-7 + 7x + -3x = 5(x + -4)

Combine like terms: 7x + -3x = 4x
-7 + 4x = 5(x + -4)

Reorder the terms:
-7 + 4x = 5(-4 + x)
-7 + 4x = (-4 * 5 + x * 5)
-7 + 4x = (-20 + 5x)

Solving
-7 + 4x = -20 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-7 + 4x + -5x = -20 + 5x + -5x

Combine like terms: 4x + -5x = -1x
-7 + -1x = -20 + 5x + -5x

Combine like terms: 5x + -5x = 0
-7 + -1x = -20 + 0
-7 + -1x = -20

Add '7' to each side of the equation.
-7 + 7 + -1x = -20 + 7

Combine like terms: -7 + 7 = 0
0 + -1x = -20 + 7
-1x = -20 + 7

Combine like terms: -20 + 7 = -13
-1x = -13

Divide each side by '-1'.
x = 13

Simplifying
x = 13

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