-5(1-9a)=40

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Solution for -5(1-9a)=40 equation: 


Simplifying
-5(1 + -9a) = 40
(1 * -5 + -9a * -5) = 40
(-5 + 45a) = 40

Solving
-5 + 45a = 40

Solving for variable 'a'.

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

Add '5' to each side of the equation.
-5 + 5 + 45a = 40 + 5

Combine like terms: -5 + 5 = 0
0 + 45a = 40 + 5
45a = 40 + 5

Combine like terms: 40 + 5 = 45
45a = 45

Divide each side by '45'.
a = 1

Simplifying
a = 1

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