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

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Solution for 7a-(1a-8)=1a+3 equation:


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

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

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

Combine like terms: 7a + -1a = 6a
8 + 6a = 1a + 3

Reorder the terms:
8 + 6a = 3 + 1a

Solving
8 + 6a = 3 + 1a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
8 + 6a + -1a = 3 + 1a + -1a

Combine like terms: 6a + -1a = 5a
8 + 5a = 3 + 1a + -1a

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

Add '-8' to each side of the equation.
8 + -8 + 5a = 3 + -8

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

Combine like terms: 3 + -8 = -5
5a = -5

Divide each side by '5'.
a = -1

Simplifying
a = -1

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