8x+21=7x-6

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Solution for 8x+21=7x-6 equation:


Simplifying
8x + 21 = 7x + -6

Reorder the terms:
21 + 8x = 7x + -6

Reorder the terms:
21 + 8x = -6 + 7x

Solving
21 + 8x = -6 + 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.
21 + 8x + -7x = -6 + 7x + -7x

Combine like terms: 8x + -7x = 1x
21 + 1x = -6 + 7x + -7x

Combine like terms: 7x + -7x = 0
21 + 1x = -6 + 0
21 + 1x = -6

Add '-21' to each side of the equation.
21 + -21 + 1x = -6 + -21

Combine like terms: 21 + -21 = 0
0 + 1x = -6 + -21
1x = -6 + -21

Combine like terms: -6 + -21 = -27
1x = -27

Divide each side by '1'.
x = -27

Simplifying
x = -27

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