6x-7=-8x-21

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


Simplifying
6x + -7 = -8x + -21

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

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

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

Solving for variable 'x'.

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

Add '8x' to each side of the equation.
-7 + 6x + 8x = -21 + -8x + 8x

Combine like terms: 6x + 8x = 14x
-7 + 14x = -21 + -8x + 8x

Combine like terms: -8x + 8x = 0
-7 + 14x = -21 + 0
-7 + 14x = -21

Add '7' to each side of the equation.
-7 + 7 + 14x = -21 + 7

Combine like terms: -7 + 7 = 0
0 + 14x = -21 + 7
14x = -21 + 7

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

Divide each side by '14'.
x = -1

Simplifying
x = -1

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