0.25(20+a)=30

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Solution for 0.25(20+a)=30 equation: 


Simplifying
0.25(20 + a) = 30
(20 * 0.25 + a * 0.25) = 30
(5 + 0.25a) = 30

Solving
5 + 0.25a = 30

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 + 0.25a = 30 + -5

Combine like terms: 5 + -5 = 0
0 + 0.25a = 30 + -5
0.25a = 30 + -5

Combine like terms: 30 + -5 = 25
0.25a = 25

Divide each side by '0.25'.
a = 100

Simplifying
a = 100

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