7x+3+5x+9=90

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Solution for 7x+3+5x+9=90 equation:


Simplifying
7x + 3 + 5x + 9 = 90

Reorder the terms:
3 + 9 + 7x + 5x = 90

Combine like terms: 3 + 9 = 12
12 + 7x + 5x = 90

Combine like terms: 7x + 5x = 12x
12 + 12x = 90

Solving
12 + 12x = 90

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 12x = 90 + -12

Combine like terms: 12 + -12 = 0
0 + 12x = 90 + -12
12x = 90 + -12

Combine like terms: 90 + -12 = 78
12x = 78

Divide each side by '12'.
x = 6.5

Simplifying
x = 6.5

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