-5(9+a)=-145

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Solution for -5(9+a)=-145 equation: 


Simplifying
-5(9 + a) = -145
(9 * -5 + a * -5) = -145
(-45 + -5a) = -145

Solving
-45 + -5a = -145

Solving for variable 'a'.

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

Add '45' to each side of the equation.
-45 + 45 + -5a = -145 + 45

Combine like terms: -45 + 45 = 0
0 + -5a = -145 + 45
-5a = -145 + 45

Combine like terms: -145 + 45 = -100
-5a = -100

Divide each side by '-5'.
a = 20

Simplifying
a = 20

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