-28-7a=3a-2(-5a-6)

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Solution for -28-7a=3a-2(-5a-6) equation:


Simplifying
-28 + -7a = 3a + -2(-5a + -6)

Reorder the terms:
-28 + -7a = 3a + -2(-6 + -5a)
-28 + -7a = 3a + (-6 * -2 + -5a * -2)
-28 + -7a = 3a + (12 + 10a)

Reorder the terms:
-28 + -7a = 12 + 3a + 10a

Combine like terms: 3a + 10a = 13a
-28 + -7a = 12 + 13a

Solving
-28 + -7a = 12 + 13a

Solving for variable 'a'.

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

Add '-13a' to each side of the equation.
-28 + -7a + -13a = 12 + 13a + -13a

Combine like terms: -7a + -13a = -20a
-28 + -20a = 12 + 13a + -13a

Combine like terms: 13a + -13a = 0
-28 + -20a = 12 + 0
-28 + -20a = 12

Add '28' to each side of the equation.
-28 + 28 + -20a = 12 + 28

Combine like terms: -28 + 28 = 0
0 + -20a = 12 + 28
-20a = 12 + 28

Combine like terms: 12 + 28 = 40
-20a = 40

Divide each side by '-20'.
a = -2

Simplifying
a = -2

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