3x-15-5x-23=90

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Solution for 3x-15-5x-23=90 equation:


Simplifying
3x + -15 + -5x + -23 = 90

Reorder the terms:
-15 + -23 + 3x + -5x = 90

Combine like terms: -15 + -23 = -38
-38 + 3x + -5x = 90

Combine like terms: 3x + -5x = -2x
-38 + -2x = 90

Solving
-38 + -2x = 90

Solving for variable 'x'.

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

Add '38' to each side of the equation.
-38 + 38 + -2x = 90 + 38

Combine like terms: -38 + 38 = 0
0 + -2x = 90 + 38
-2x = 90 + 38

Combine like terms: 90 + 38 = 128
-2x = 128

Divide each side by '-2'.
x = -64

Simplifying
x = -64

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