7(2-x)=21

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Solution for 7(2-x)=21 equation: 


Simplifying
7(2 + -1x) = 21
(2 * 7 + -1x * 7) = 21
(14 + -7x) = 21

Solving
14 + -7x = 21

Solving for variable 'x'.

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

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

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

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

Divide each side by '-7'.
x = -1

Simplifying
x = -1

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