21x+7=3x-8x

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Solution for 21x+7=3x-8x equation:


Simplifying
21x + 7 = 3x + -8x

Reorder the terms:
7 + 21x = 3x + -8x

Combine like terms: 3x + -8x = -5x
7 + 21x = -5x

Solving
7 + 21x = -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
7 + 21x + 5x = -5x + 5x

Combine like terms: 21x + 5x = 26x
7 + 26x = -5x + 5x

Combine like terms: -5x + 5x = 0
7 + 26x = 0

Add '-7' to each side of the equation.
7 + -7 + 26x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 26x = 0 + -7
26x = 0 + -7

Combine like terms: 0 + -7 = -7
26x = -7

Divide each side by '26'.
x = -0.2692307692

Simplifying
x = -0.2692307692

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