(7x+5)+(9x+2)=81

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Solution for (7x+5)+(9x+2)=81 equation:


Simplifying
(7x + 5) + (9x + 2) = 81

Reorder the terms:
(5 + 7x) + (9x + 2) = 81

Remove parenthesis around (5 + 7x)
5 + 7x + (9x + 2) = 81

Reorder the terms:
5 + 7x + (2 + 9x) = 81

Remove parenthesis around (2 + 9x)
5 + 7x + 2 + 9x = 81

Reorder the terms:
5 + 2 + 7x + 9x = 81

Combine like terms: 5 + 2 = 7
7 + 7x + 9x = 81

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

Solving
7 + 16x = 81

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 16x = 81 + -7

Combine like terms: 7 + -7 = 0
0 + 16x = 81 + -7
16x = 81 + -7

Combine like terms: 81 + -7 = 74
16x = 74

Divide each side by '16'.
x = 4.625

Simplifying
x = 4.625

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