8a+8-1=15

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Solution for 8a+8-1=15 equation: 


Simplifying
8a + 8 + -1 = 15

Reorder the terms:
8 + -1 + 8a = 15

Combine like terms: 8 + -1 = 7
7 + 8a = 15

Solving
7 + 8a = 15

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 + 8a = 15 + -7

Combine like terms: 7 + -7 = 0
0 + 8a = 15 + -7
8a = 15 + -7

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

Divide each side by '8'.
a = 1

Simplifying
a = 1

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