3*(4+x)=20+x

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


Simplifying
3(4 + x) = 20 + x
(4 * 3 + x * 3) = 20 + x
(12 + 3x) = 20 + x

Solving
12 + 3x = 20 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
12 + 3x + -1x = 20 + x + -1x

Combine like terms: 3x + -1x = 2x
12 + 2x = 20 + x + -1x

Combine like terms: x + -1x = 0
12 + 2x = 20 + 0
12 + 2x = 20

Add '-12' to each side of the equation.
12 + -12 + 2x = 20 + -12

Combine like terms: 12 + -12 = 0
0 + 2x = 20 + -12
2x = 20 + -12

Combine like terms: 20 + -12 = 8
2x = 8

Divide each side by '2'.
x = 4

Simplifying
x = 4

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