7-7x=21+3x

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


Simplifying
7 + -7x = 21 + 3x

Solving
7 + -7x = 21 + 3x

Solving for variable 'x'.

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

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

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

Combine like terms: 3x + -3x = 0
7 + -10x = 21 + 0
7 + -10x = 21

Add '-7' to each side of the equation.
7 + -7 + -10x = 21 + -7

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

Combine like terms: 21 + -7 = 14
-10x = 14

Divide each side by '-10'.
x = -1.4

Simplifying
x = -1.4

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