7x+3+5x+13=90

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Solution for 7x+3+5x+13=90 equation:


Simplifying
7x + 3 + 5x + 13 = 90

Reorder the terms:
3 + 13 + 7x + 5x = 90

Combine like terms: 3 + 13 = 16
16 + 7x + 5x = 90

Combine like terms: 7x + 5x = 12x
16 + 12x = 90

Solving
16 + 12x = 90

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + 12x = 90 + -16

Combine like terms: 16 + -16 = 0
0 + 12x = 90 + -16
12x = 90 + -16

Combine like terms: 90 + -16 = 74
12x = 74

Divide each side by '12'.
x = 6.166666667

Simplifying
x = 6.166666667

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