5(a-5)=90

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Solution for 5(a-5)=90 equation: 


Simplifying
5(a + -5) = 90

Reorder the terms:
5(-5 + a) = 90
(-5 * 5 + a * 5) = 90
(-25 + 5a) = 90

Solving
-25 + 5a = 90

Solving for variable 'a'.

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

Add '25' to each side of the equation.
-25 + 25 + 5a = 90 + 25

Combine like terms: -25 + 25 = 0
0 + 5a = 90 + 25
5a = 90 + 25

Combine like terms: 90 + 25 = 115
5a = 115

Divide each side by '5'.
a = 23

Simplifying
a = 23

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