7x-3x+7=3[x-4]+20

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Solution for 7x-3x+7=3[x-4]+20 equation:


Simplifying
7x + -3x + 7 = 3[x + -4] + 20

Reorder the terms:
7 + 7x + -3x = 3[x + -4] + 20

Combine like terms: 7x + -3x = 4x
7 + 4x = 3[x + -4] + 20

Reorder the terms:
7 + 4x = 3[-4 + x] + 20
7 + 4x = [-4 * 3 + x * 3] + 20
7 + 4x = [-12 + 3x] + 20

Reorder the terms:
7 + 4x = -12 + 20 + 3x

Combine like terms: -12 + 20 = 8
7 + 4x = 8 + 3x

Solving
7 + 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.
7 + 4x + -3x = 8 + 3x + -3x

Combine like terms: 4x + -3x = 1x
7 + 1x = 8 + 3x + -3x

Combine like terms: 3x + -3x = 0
7 + 1x = 8 + 0
7 + 1x = 8

Add '-7' to each side of the equation.
7 + -7 + 1x = 8 + -7

Combine like terms: 7 + -7 = 0
0 + 1x = 8 + -7
1x = 8 + -7

Combine like terms: 8 + -7 = 1
1x = 1

Divide each side by '1'.
x = 1

Simplifying
x = 1

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