13+7x=1+9x+21

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Solution for 13+7x=1+9x+21 equation:


Simplifying
13 + 7x = 1 + 9x + 21

Reorder the terms:
13 + 7x = 1 + 21 + 9x

Combine like terms: 1 + 21 = 22
13 + 7x = 22 + 9x

Solving
13 + 7x = 22 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
13 + 7x + -9x = 22 + 9x + -9x

Combine like terms: 7x + -9x = -2x
13 + -2x = 22 + 9x + -9x

Combine like terms: 9x + -9x = 0
13 + -2x = 22 + 0
13 + -2x = 22

Add '-13' to each side of the equation.
13 + -13 + -2x = 22 + -13

Combine like terms: 13 + -13 = 0
0 + -2x = 22 + -13
-2x = 22 + -13

Combine like terms: 22 + -13 = 9
-2x = 9

Divide each side by '-2'.
x = -4.5

Simplifying
x = -4.5

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