3(x-3)+7x=81

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Solution for 3(x-3)+7x=81 equation:


Simplifying
3(x + -3) + 7x = 81

Reorder the terms:
3(-3 + x) + 7x = 81
(-3 * 3 + x * 3) + 7x = 81
(-9 + 3x) + 7x = 81

Combine like terms: 3x + 7x = 10x
-9 + 10x = 81

Solving
-9 + 10x = 81

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 10x = 81 + 9

Combine like terms: -9 + 9 = 0
0 + 10x = 81 + 9
10x = 81 + 9

Combine like terms: 81 + 9 = 90
10x = 90

Divide each side by '10'.
x = 9

Simplifying
x = 9

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