3x-13+x+39=90

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Solution for 3x-13+x+39=90 equation:


Simplifying
3x + -13 + x + 39 = 90

Reorder the terms:
-13 + 39 + 3x + x = 90

Combine like terms: -13 + 39 = 26
26 + 3x + x = 90

Combine like terms: 3x + x = 4x
26 + 4x = 90

Solving
26 + 4x = 90

Solving for variable 'x'.

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

Add '-26' to each side of the equation.
26 + -26 + 4x = 90 + -26

Combine like terms: 26 + -26 = 0
0 + 4x = 90 + -26
4x = 90 + -26

Combine like terms: 90 + -26 = 64
4x = 64

Divide each side by '4'.
x = 16

Simplifying
x = 16

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