3x+3(-2x+21)=81

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Solution for 3x+3(-2x+21)=81 equation:


Simplifying
3x + 3(-2x + 21) = 81

Reorder the terms:
3x + 3(21 + -2x) = 81
3x + (21 * 3 + -2x * 3) = 81
3x + (63 + -6x) = 81

Reorder the terms:
63 + 3x + -6x = 81

Combine like terms: 3x + -6x = -3x
63 + -3x = 81

Solving
63 + -3x = 81

Solving for variable 'x'.

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

Add '-63' to each side of the equation.
63 + -63 + -3x = 81 + -63

Combine like terms: 63 + -63 = 0
0 + -3x = 81 + -63
-3x = 81 + -63

Combine like terms: 81 + -63 = 18
-3x = 18

Divide each side by '-3'.
x = -6

Simplifying
x = -6

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