3.00(20+a)=90

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Solution for 3.00(20+a)=90 equation: 


Simplifying
3.00(20 + a) = 90
(20 * 3.00 + a * 3.00) = 90
(60 + 3.00a) = 90

Solving
60 + 3.00a = 90

Solving for variable 'a'.

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

Add '-60' to each side of the equation.
60 + -60 + 3.00a = 90 + -60

Combine like terms: 60 + -60 = 0
0 + 3.00a = 90 + -60
3.00a = 90 + -60

Combine like terms: 90 + -60 = 30
3.00a = 30

Divide each side by '3.00'.
a = 10

Simplifying
a = 10

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