(a-5)+7=-(8+3a)

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Solution for (a-5)+7=-(8+3a) equation:


Simplifying
(a + -5) + 7 = -1(8 + 3a)

Reorder the terms:
(-5 + a) + 7 = -1(8 + 3a)

Remove parenthesis around (-5 + a)
-5 + a + 7 = -1(8 + 3a)

Reorder the terms:
-5 + 7 + a = -1(8 + 3a)

Combine like terms: -5 + 7 = 2
2 + a = -1(8 + 3a)
2 + a = (8 * -1 + 3a * -1)
2 + a = (-8 + -3a)

Solving
2 + a = -8 + -3a

Solving for variable 'a'.

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

Add '3a' to each side of the equation.
2 + a + 3a = -8 + -3a + 3a

Combine like terms: a + 3a = 4a
2 + 4a = -8 + -3a + 3a

Combine like terms: -3a + 3a = 0
2 + 4a = -8 + 0
2 + 4a = -8

Add '-2' to each side of the equation.
2 + -2 + 4a = -8 + -2

Combine like terms: 2 + -2 = 0
0 + 4a = -8 + -2
4a = -8 + -2

Combine like terms: -8 + -2 = -10
4a = -10

Divide each side by '4'.
a = -2.5

Simplifying
a = -2.5

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