5x+8+7x+10=90

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Solution for 5x+8+7x+10=90 equation:


Simplifying
5x + 8 + 7x + 10 = 90

Reorder the terms:
8 + 10 + 5x + 7x = 90

Combine like terms: 8 + 10 = 18
18 + 5x + 7x = 90

Combine like terms: 5x + 7x = 12x
18 + 12x = 90

Solving
18 + 12x = 90

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 12x = 90 + -18

Combine like terms: 18 + -18 = 0
0 + 12x = 90 + -18
12x = 90 + -18

Combine like terms: 90 + -18 = 72
12x = 72

Divide each side by '12'.
x = 6

Simplifying
x = 6

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