17=9+8(a+6)

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Solution for 17=9+8(a+6) equation:


Simplifying
17 = 9 + 8(a + 6)

Reorder the terms:
17 = 9 + 8(6 + a)
17 = 9 + (6 * 8 + a * 8)
17 = 9 + (48 + 8a)

Combine like terms: 9 + 48 = 57
17 = 57 + 8a

Solving
17 = 57 + 8a

Solving for variable 'a'.

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

Add '-8a' to each side of the equation.
17 + -8a = 57 + 8a + -8a

Combine like terms: 8a + -8a = 0
17 + -8a = 57 + 0
17 + -8a = 57

Add '-17' to each side of the equation.
17 + -17 + -8a = 57 + -17

Combine like terms: 17 + -17 = 0
0 + -8a = 57 + -17
-8a = 57 + -17

Combine like terms: 57 + -17 = 40
-8a = 40

Divide each side by '-8'.
a = -5

Simplifying
a = -5

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