-7(2x+1)=21

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Solution for -7(2x+1)=21 equation: 


Simplifying
-7(2x + 1) = 21

Reorder the terms:
-7(1 + 2x) = 21
(1 * -7 + 2x * -7) = 21
(-7 + -14x) = 21

Solving
-7 + -14x = 21

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 + -14x = 21 + 7

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

Combine like terms: 21 + 7 = 28
-14x = 28

Divide each side by '-14'.
x = -2

Simplifying
x = -2

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