7(X-6)=21

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Solution for 7(X-6)=21 equation: 


Simplifying
7(X + -6) = 21

Reorder the terms:
7(-6 + X) = 21
(-6 * 7 + X * 7) = 21
(-42 + 7X) = 21

Solving
-42 + 7X = 21

Solving for variable 'X'.

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

Add '42' to each side of the equation.
-42 + 42 + 7X = 21 + 42

Combine like terms: -42 + 42 = 0
0 + 7X = 21 + 42
7X = 21 + 42

Combine like terms: 21 + 42 = 63
7X = 63

Divide each side by '7'.
X = 9

Simplifying
X = 9

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