8x+7=6x+21

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


Simplifying
8x + 7 = 6x + 21

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

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

Solving
7 + 8x = 21 + 6x

Solving for variable 'x'.

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

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

Combine like terms: 8x + -6x = 2x
7 + 2x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
7 + 2x = 21 + 0
7 + 2x = 21

Add '-7' to each side of the equation.
7 + -7 + 2x = 21 + -7

Combine like terms: 7 + -7 = 0
0 + 2x = 21 + -7
2x = 21 + -7

Combine like terms: 21 + -7 = 14
2x = 14

Divide each side by '2'.
x = 7

Simplifying
x = 7

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