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

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


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

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

Reorder the terms:
-15 + -7a = 2(-3 + a)
-15 + -7a = (-3 * 2 + a * 2)
-15 + -7a = (-6 + 2a)

Solving
-15 + -7a = -6 + 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.
-15 + -7a + -2a = -6 + 2a + -2a

Combine like terms: -7a + -2a = -9a
-15 + -9a = -6 + 2a + -2a

Combine like terms: 2a + -2a = 0
-15 + -9a = -6 + 0
-15 + -9a = -6

Add '15' to each side of the equation.
-15 + 15 + -9a = -6 + 15

Combine like terms: -15 + 15 = 0
0 + -9a = -6 + 15
-9a = -6 + 15

Combine like terms: -6 + 15 = 9
-9a = 9

Divide each side by '-9'.
a = -1

Simplifying
a = -1

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