3a+5=-9(-5a-6)-7

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Solution for 3a+5=-9(-5a-6)-7 equation:


Simplifying
3a + 5 = -9(-5a + -6) + -7

Reorder the terms:
5 + 3a = -9(-5a + -6) + -7

Reorder the terms:
5 + 3a = -9(-6 + -5a) + -7
5 + 3a = (-6 * -9 + -5a * -9) + -7
5 + 3a = (54 + 45a) + -7

Reorder the terms:
5 + 3a = 54 + -7 + 45a

Combine like terms: 54 + -7 = 47
5 + 3a = 47 + 45a

Solving
5 + 3a = 47 + 45a

Solving for variable 'a'.

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

Add '-45a' to each side of the equation.
5 + 3a + -45a = 47 + 45a + -45a

Combine like terms: 3a + -45a = -42a
5 + -42a = 47 + 45a + -45a

Combine like terms: 45a + -45a = 0
5 + -42a = 47 + 0
5 + -42a = 47

Add '-5' to each side of the equation.
5 + -5 + -42a = 47 + -5

Combine like terms: 5 + -5 = 0
0 + -42a = 47 + -5
-42a = 47 + -5

Combine like terms: 47 + -5 = 42
-42a = 42

Divide each side by '-42'.
a = -1

Simplifying
a = -1

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