30-2a=5

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Solution for 30-2a=5 equation: 


Simplifying
30 + -2a = 5

Solving
30 + -2a = 5

Solving for variable 'a'.

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

Add '-30' to each side of the equation.
30 + -30 + -2a = 5 + -30

Combine like terms: 30 + -30 = 0
0 + -2a = 5 + -30
-2a = 5 + -30

Combine like terms: 5 + -30 = -25
-2a = -25

Divide each side by '-2'.
a = 12.5

Simplifying
a = 12.5

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