-31-3x=7x+21

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Solution for -31-3x=7x+21 equation:


Simplifying
-31 + -3x = 7x + 21

Reorder the terms:
-31 + -3x = 21 + 7x

Solving
-31 + -3x = 21 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-31 + -3x + -7x = 21 + 7x + -7x

Combine like terms: -3x + -7x = -10x
-31 + -10x = 21 + 7x + -7x

Combine like terms: 7x + -7x = 0
-31 + -10x = 21 + 0
-31 + -10x = 21

Add '31' to each side of the equation.
-31 + 31 + -10x = 21 + 31

Combine like terms: -31 + 31 = 0
0 + -10x = 21 + 31
-10x = 21 + 31

Combine like terms: 21 + 31 = 52
-10x = 52

Divide each side by '-10'.
x = -5.2

Simplifying
x = -5.2

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