-7a-14=-21

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Solution for -7a-14=-21 equation: 


Simplifying
-7a + -14 = -21

Reorder the terms:
-14 + -7a = -21

Solving
-14 + -7a = -21

Solving for variable 'a'.

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

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

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

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

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

Simplifying
a = 1

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