9[4-5(a-5)]=9(5-4a)

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Solution for 9[4-5(a-5)]=9(5-4a) equation:


Simplifying
9[4 + -5(a + -5)] = 9(5 + -4a)

Reorder the terms:
9[4 + -5(-5 + a)] = 9(5 + -4a)
9[4 + (-5 * -5 + a * -5)] = 9(5 + -4a)
9[4 + (25 + -5a)] = 9(5 + -4a)

Combine like terms: 4 + 25 = 29
9[29 + -5a] = 9(5 + -4a)
[29 * 9 + -5a * 9] = 9(5 + -4a)
[261 + -45a] = 9(5 + -4a)
261 + -45a = (5 * 9 + -4a * 9)
261 + -45a = (45 + -36a)

Solving
261 + -45a = 45 + -36a

Solving for variable 'a'.

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

Add '36a' to each side of the equation.
261 + -45a + 36a = 45 + -36a + 36a

Combine like terms: -45a + 36a = -9a
261 + -9a = 45 + -36a + 36a

Combine like terms: -36a + 36a = 0
261 + -9a = 45 + 0
261 + -9a = 45

Add '-261' to each side of the equation.
261 + -261 + -9a = 45 + -261

Combine like terms: 261 + -261 = 0
0 + -9a = 45 + -261
-9a = 45 + -261

Combine like terms: 45 + -261 = -216
-9a = -216

Divide each side by '-9'.
a = 24

Simplifying
a = 24

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