7.5a+15=75

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Solution for 7.5a+15=75 equation: 


Simplifying
7.5a + 15 = 75

Reorder the terms:
15 + 7.5a = 75

Solving
15 + 7.5a = 75

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + 7.5a = 75 + -15

Combine like terms: 15 + -15 = 0
0 + 7.5a = 75 + -15
7.5a = 75 + -15

Combine like terms: 75 + -15 = 60
7.5a = 60

Divide each side by '7.5'.
a = 8

Simplifying
a = 8

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