5(a-1)=40

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


Simplifying
5(a + -1) = 40

Reorder the terms:
5(-1 + a) = 40
(-1 * 5 + a * 5) = 40
(-5 + 5a) = 40

Solving
-5 + 5a = 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 + 5a = 40 + 5

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

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

Divide each side by '5'.
a = 9

Simplifying
a = 9

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