5(a-2)=90

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Solution for 5(a-2)=90 equation: 


Simplifying
5(a + -2) = 90

Reorder the terms:
5(-2 + a) = 90
(-2 * 5 + a * 5) = 90
(-10 + 5a) = 90

Solving
-10 + 5a = 90

Solving for variable 'a'.

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

Add '10' to each side of the equation.
-10 + 10 + 5a = 90 + 10

Combine like terms: -10 + 10 = 0
0 + 5a = 90 + 10
5a = 90 + 10

Combine like terms: 90 + 10 = 100
5a = 100

Divide each side by '5'.
a = 20

Simplifying
a = 20

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