-3-(a-2)=7a+15

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Solution for -3-(a-2)=7a+15 equation:


Simplifying
-3 + -1(a + -2) = 7a + 15

Reorder the terms:
-3 + -1(-2 + a) = 7a + 15
-3 + (-2 * -1 + a * -1) = 7a + 15
-3 + (2 + -1a) = 7a + 15

Combine like terms: -3 + 2 = -1
-1 + -1a = 7a + 15

Reorder the terms:
-1 + -1a = 15 + 7a

Solving
-1 + -1a = 15 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
-1 + -1a + -7a = 15 + 7a + -7a

Combine like terms: -1a + -7a = -8a
-1 + -8a = 15 + 7a + -7a

Combine like terms: 7a + -7a = 0
-1 + -8a = 15 + 0
-1 + -8a = 15

Add '1' to each side of the equation.
-1 + 1 + -8a = 15 + 1

Combine like terms: -1 + 1 = 0
0 + -8a = 15 + 1
-8a = 15 + 1

Combine like terms: 15 + 1 = 16
-8a = 16

Divide each side by '-8'.
a = -2

Simplifying
a = -2

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