-20=-5(a+7)

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Solution for -20=-5(a+7) equation:


Simplifying
-20 = -5(a + 7)

Reorder the terms:
-20 = -5(7 + a)
-20 = (7 * -5 + a * -5)
-20 = (-35 + -5a)

Solving
-20 = -35 + -5a

Solving for variable 'a'.

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

Add '5a' to each side of the equation.
-20 + 5a = -35 + -5a + 5a

Combine like terms: -5a + 5a = 0
-20 + 5a = -35 + 0
-20 + 5a = -35

Add '20' to each side of the equation.
-20 + 20 + 5a = -35 + 20

Combine like terms: -20 + 20 = 0
0 + 5a = -35 + 20
5a = -35 + 20

Combine like terms: -35 + 20 = -15
5a = -15

Divide each side by '5'.
a = -3

Simplifying
a = -3

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