7(a-6)=-21

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


Simplifying
7(a + -6) = -21

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

Solving
-42 + 7a = -21

Solving for variable 'a'.

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

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

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

Combine like terms: -21 + 42 = 21
7a = 21

Divide each side by '7'.
a = 3

Simplifying
a = 3

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