9[2-a]=63

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Solution for 9[2-a]=63 equation: 


Simplifying
9[2 + -1a] = 63
[2 * 9 + -1a * 9] = 63
[18 + -9a] = 63

Solving
18 + -9a = 63

Solving for variable 'a'.

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

Add '-18' to each side of the equation.
18 + -18 + -9a = 63 + -18

Combine like terms: 18 + -18 = 0
0 + -9a = 63 + -18
-9a = 63 + -18

Combine like terms: 63 + -18 = 45
-9a = 45

Divide each side by '-9'.
a = -5

Simplifying
a = -5

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