4(5-5a)=180

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Solution for 4(5-5a)=180 equation: 


Simplifying
4(5 + -5a) = 180
(5 * 4 + -5a * 4) = 180
(20 + -20a) = 180

Solving
20 + -20a = 180

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 + -20a = 180 + -20

Combine like terms: 20 + -20 = 0
0 + -20a = 180 + -20
-20a = 180 + -20

Combine like terms: 180 + -20 = 160
-20a = 160

Divide each side by '-20'.
a = -8

Simplifying
a = -8

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