7x+3(3x-5)=81

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Solution for 7x+3(3x-5)=81 equation:


Simplifying
7x + 3(3x + -5) = 81

Reorder the terms:
7x + 3(-5 + 3x) = 81
7x + (-5 * 3 + 3x * 3) = 81
7x + (-15 + 9x) = 81

Reorder the terms:
-15 + 7x + 9x = 81

Combine like terms: 7x + 9x = 16x
-15 + 16x = 81

Solving
-15 + 16x = 81

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 16x = 81 + 15

Combine like terms: -15 + 15 = 0
0 + 16x = 81 + 15
16x = 81 + 15

Combine like terms: 81 + 15 = 96
16x = 96

Divide each side by '16'.
x = 6

Simplifying
x = 6

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