9-(5a+1)+3a+7=

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Solution for 9-(5a+1)+3a+7= equation:


Simplifying
9 + -1(5a + 1) + 3a + 7 = 0

Reorder the terms:
9 + -1(1 + 5a) + 3a + 7 = 0
9 + (1 * -1 + 5a * -1) + 3a + 7 = 0
9 + (-1 + -5a) + 3a + 7 = 0

Reorder the terms:
9 + -1 + 7 + -5a + 3a = 0

Combine like terms: 9 + -1 = 8
8 + 7 + -5a + 3a = 0

Combine like terms: 8 + 7 = 15
15 + -5a + 3a = 0

Combine like terms: -5a + 3a = -2a
15 + -2a = 0

Solving
15 + -2a = 0

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + -2a = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -2a = 0 + -15
-2a = 0 + -15

Combine like terms: 0 + -15 = -15
-2a = -15

Divide each side by '-2'.
a = 7.5

Simplifying
a = 7.5

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