7.5a-3.9=27.60

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Solution for 7.5a-3.9=27.60 equation:


Simplifying
7.5a + -3.9 = 27.60

Reorder the terms:
-3.9 + 7.5a = 27.60

Solving
-3.9 + 7.5a = 27.60

Solving for variable 'a'.

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

Add '3.9' to each side of the equation.
-3.9 + 3.9 + 7.5a = 27.60 + 3.9

Combine like terms: -3.9 + 3.9 = 0.0
0.0 + 7.5a = 27.60 + 3.9
7.5a = 27.60 + 3.9

Combine like terms: 27.60 + 3.9 = 31.5
7.5a = 31.5

Divide each side by '7.5'.
a = 4.2

Simplifying
a = 4.2

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