0.2(100+a)=50

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Solution for 0.2(100+a)=50 equation: 


Simplifying
0.2(100 + a) = 50
(100 * 0.2 + a * 0.2) = 50
(20 + 0.2a) = 50

Solving
20 + 0.2a = 50

Solving for variable 'a'.

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

Add '-20' to each side of the equation.
20 + -20 + 0.2a = 50 + -20

Combine like terms: 20 + -20 = 0
0 + 0.2a = 50 + -20
0.2a = 50 + -20

Combine like terms: 50 + -20 = 30
0.2a = 30

Divide each side by '0.2'.
a = 150

Simplifying
a = 150

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