30+7x-7=6x+21

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Solution for 30+7x-7=6x+21 equation:


Simplifying
30 + 7x + -7 = 6x + 21

Reorder the terms:
30 + -7 + 7x = 6x + 21

Combine like terms: 30 + -7 = 23
23 + 7x = 6x + 21

Reorder the terms:
23 + 7x = 21 + 6x

Solving
23 + 7x = 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.
23 + 7x + -6x = 21 + 6x + -6x

Combine like terms: 7x + -6x = 1x
23 + 1x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
23 + 1x = 21 + 0
23 + 1x = 21

Add '-23' to each side of the equation.
23 + -23 + 1x = 21 + -23

Combine like terms: 23 + -23 = 0
0 + 1x = 21 + -23
1x = 21 + -23

Combine like terms: 21 + -23 = -2
1x = -2

Divide each side by '1'.
x = -2

Simplifying
x = -2

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