8(a+1)+9=2a-7

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Solution for 8(a+1)+9=2a-7 equation:


Simplifying
8(a + 1) + 9 = 2a + -7

Reorder the terms:
8(1 + a) + 9 = 2a + -7
(1 * 8 + a * 8) + 9 = 2a + -7
(8 + 8a) + 9 = 2a + -7

Reorder the terms:
8 + 9 + 8a = 2a + -7

Combine like terms: 8 + 9 = 17
17 + 8a = 2a + -7

Reorder the terms:
17 + 8a = -7 + 2a

Solving
17 + 8a = -7 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
17 + 8a + -2a = -7 + 2a + -2a

Combine like terms: 8a + -2a = 6a
17 + 6a = -7 + 2a + -2a

Combine like terms: 2a + -2a = 0
17 + 6a = -7 + 0
17 + 6a = -7

Add '-17' to each side of the equation.
17 + -17 + 6a = -7 + -17

Combine like terms: 17 + -17 = 0
0 + 6a = -7 + -17
6a = -7 + -17

Combine like terms: -7 + -17 = -24
6a = -24

Divide each side by '6'.
a = -4

Simplifying
a = -4

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