5a-7=8

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Solution for 5a-7=8 equation: 


Simplifying
5a + -7 = 8

Reorder the terms:
-7 + 5a = 8

Solving
-7 + 5a = 8

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 + 5a = 8 + 7

Combine like terms: -7 + 7 = 0
0 + 5a = 8 + 7
5a = 8 + 7

Combine like terms: 8 + 7 = 15
5a = 15

Divide each side by '5'.
a = 3

Simplifying
a = 3

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