10a-7=78

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Solution for 10a-7=78 equation: 


Simplifying
10a + -7 = 78

Reorder the terms:
-7 + 10a = 78

Solving
-7 + 10a = 78

Solving for variable 'a'.

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

Add '7' to each side of the equation.
-7 + 7 + 10a = 78 + 7

Combine like terms: -7 + 7 = 0
0 + 10a = 78 + 7
10a = 78 + 7

Combine like terms: 78 + 7 = 85
10a = 85

Divide each side by '10'.
a = 8.5

Simplifying
a = 8.5

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