7x-7=21+7

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


Simplifying
7x + -7 = 21 + 7

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

Combine like terms: 21 + 7 = 28
-7 + 7x = 28

Solving
-7 + 7x = 28

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + 7x = 28 + 7

Combine like terms: -7 + 7 = 0
0 + 7x = 28 + 7
7x = 28 + 7

Combine like terms: 28 + 7 = 35
7x = 35

Divide each side by '7'.
x = 5

Simplifying
x = 5

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