3x+3(x+1)=81

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Solution for 3x+3(x+1)=81 equation:


Simplifying
3x + 3(x + 1) = 81

Reorder the terms:
3x + 3(1 + x) = 81
3x + (1 * 3 + x * 3) = 81
3x + (3 + 3x) = 81

Reorder the terms:
3 + 3x + 3x = 81

Combine like terms: 3x + 3x = 6x
3 + 6x = 81

Solving
3 + 6x = 81

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 6x = 81 + -3

Combine like terms: 3 + -3 = 0
0 + 6x = 81 + -3
6x = 81 + -3

Combine like terms: 81 + -3 = 78
6x = 78

Divide each side by '6'.
x = 13

Simplifying
x = 13

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