5(a-1)=75

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Solution for 5(a-1)=75 equation: 


Simplifying
5(a + -1) = 75

Reorder the terms:
5(-1 + a) = 75
(-1 * 5 + a * 5) = 75
(-5 + 5a) = 75

Solving
-5 + 5a = 75

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 = 75 + 5

Combine like terms: -5 + 5 = 0
0 + 5a = 75 + 5
5a = 75 + 5

Combine like terms: 75 + 5 = 80
5a = 80

Divide each side by '5'.
a = 16

Simplifying
a = 16

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