9*[7a-3]=45-9a

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Solution for 9*[7a-3]=45-9a equation:


Simplifying
9[7a + -3] = 45 + -9a

Reorder the terms:
9[-3 + 7a] = 45 + -9a
[-3 * 9 + 7a * 9] = 45 + -9a
[-27 + 63a] = 45 + -9a

Solving
-27 + 63a = 45 + -9a

Solving for variable 'a'.

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

Add '9a' to each side of the equation.
-27 + 63a + 9a = 45 + -9a + 9a

Combine like terms: 63a + 9a = 72a
-27 + 72a = 45 + -9a + 9a

Combine like terms: -9a + 9a = 0
-27 + 72a = 45 + 0
-27 + 72a = 45

Add '27' to each side of the equation.
-27 + 27 + 72a = 45 + 27

Combine like terms: -27 + 27 = 0
0 + 72a = 45 + 27
72a = 45 + 27

Combine like terms: 45 + 27 = 72
72a = 72

Divide each side by '72'.
a = 1

Simplifying
a = 1

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