15x-31=16x+20

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Solution for 15x-31=16x+20 equation:


Simplifying
15x + -31 = 16x + 20

Reorder the terms:
-31 + 15x = 16x + 20

Reorder the terms:
-31 + 15x = 20 + 16x

Solving
-31 + 15x = 20 + 16x

Solving for variable 'x'.

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

Add '-16x' to each side of the equation.
-31 + 15x + -16x = 20 + 16x + -16x

Combine like terms: 15x + -16x = -1x
-31 + -1x = 20 + 16x + -16x

Combine like terms: 16x + -16x = 0
-31 + -1x = 20 + 0
-31 + -1x = 20

Add '31' to each side of the equation.
-31 + 31 + -1x = 20 + 31

Combine like terms: -31 + 31 = 0
0 + -1x = 20 + 31
-1x = 20 + 31

Combine like terms: 20 + 31 = 51
-1x = 51

Divide each side by '-1'.
x = -51

Simplifying
x = -51

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