7x-3x=3(x-4)+20

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Solution for 7x-3x=3(x-4)+20 equation: 


Simplifying
7x + -3x = 3(x + -4) + 20

Combine like terms: 7x + -3x = 4x
4x = 3(x + -4) + 20

Reorder the terms:
4x = 3(-4 + x) + 20
4x = (-4 * 3 + x * 3) + 20
4x = (-12 + 3x) + 20

Reorder the terms:
4x = -12 + 20 + 3x

Combine like terms: -12 + 20 = 8
4x = 8 + 3x

Solving
4x = 8 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
4x + -3x = 8 + 3x + -3x

Combine like terms: 4x + -3x = 1x
1x = 8 + 3x + -3x

Combine like terms: 3x + -3x = 0
1x = 8 + 0
1x = 8

Divide each side by '1'.
x = 8

Simplifying
x = 8

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