3x-8+2x-7=90

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Solution for 3x-8+2x-7=90 equation:


Simplifying
3x + -8 + 2x + -7 = 90

Reorder the terms:
-8 + -7 + 3x + 2x = 90

Combine like terms: -8 + -7 = -15
-15 + 3x + 2x = 90

Combine like terms: 3x + 2x = 5x
-15 + 5x = 90

Solving
-15 + 5x = 90

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 + 5x = 90 + 15

Combine like terms: -15 + 15 = 0
0 + 5x = 90 + 15
5x = 90 + 15

Combine like terms: 90 + 15 = 105
5x = 105

Divide each side by '5'.
x = 21

Simplifying
x = 21

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