9(a-3)=-20+a-7

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Solution for 9(a-3)=-20+a-7 equation:


Simplifying
9(a + -3) = -20 + a + -7

Reorder the terms:
9(-3 + a) = -20 + a + -7
(-3 * 9 + a * 9) = -20 + a + -7
(-27 + 9a) = -20 + a + -7

Reorder the terms:
-27 + 9a = -20 + -7 + a

Combine like terms: -20 + -7 = -27
-27 + 9a = -27 + a

Add '27' to each side of the equation.
-27 + 27 + 9a = -27 + 27 + a

Combine like terms: -27 + 27 = 0
0 + 9a = -27 + 27 + a
9a = -27 + 27 + a

Combine like terms: -27 + 27 = 0
9a = 0 + a
9a = a

Solving
9a = a

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.
9a + -1a = a + -1a

Combine like terms: 9a + -1a = 8a
8a = a + -1a

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

Divide each side by '8'.
a = 0

Simplifying
a = 0

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