138=7+x+2x

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Solution for 138=7+x+2x equation:


Simplifying
138 = 7 + x + 2x

Combine like terms: x + 2x = 3x
138 = 7 + 3x

Solving
138 = 7 + 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.
138 + -3x = 7 + 3x + -3x

Combine like terms: 3x + -3x = 0
138 + -3x = 7 + 0
138 + -3x = 7

Add '-138' to each side of the equation.
138 + -138 + -3x = 7 + -138

Combine like terms: 138 + -138 = 0
0 + -3x = 7 + -138
-3x = 7 + -138

Combine like terms: 7 + -138 = -131
-3x = -131

Divide each side by '-3'.
x = 43.66666667

Simplifying
x = 43.66666667

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