.75a+12=42

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Solution for .75a+12=42 equation: 


Simplifying
0.75a + 12 = 42

Reorder the terms:
12 + 0.75a = 42

Solving
12 + 0.75a = 42

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + 0.75a = 42 + -12

Combine like terms: 12 + -12 = 0
0 + 0.75a = 42 + -12
0.75a = 42 + -12

Combine like terms: 42 + -12 = 30
0.75a = 30

Divide each side by '0.75'.
a = 40

Simplifying
a = 40

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