-5(4+2a)=-100

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Solution for -5(4+2a)=-100 equation: 


Simplifying
-5(4 + 2a) = -100
(4 * -5 + 2a * -5) = -100
(-20 + -10a) = -100

Solving
-20 + -10a = -100

Solving for variable 'a'.

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

Add '20' to each side of the equation.
-20 + 20 + -10a = -100 + 20

Combine like terms: -20 + 20 = 0
0 + -10a = -100 + 20
-10a = -100 + 20

Combine like terms: -100 + 20 = -80
-10a = -80

Divide each side by '-10'.
a = 8

Simplifying
a = 8

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