3(9-a)-45=21a-6(3+4a)

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Solution for 3(9-a)-45=21a-6(3+4a) equation:


Simplifying
3(9 + -1a) + -45 = 21a + -6(3 + 4a)
(9 * 3 + -1a * 3) + -45 = 21a + -6(3 + 4a)
(27 + -3a) + -45 = 21a + -6(3 + 4a)

Reorder the terms:
27 + -45 + -3a = 21a + -6(3 + 4a)

Combine like terms: 27 + -45 = -18
-18 + -3a = 21a + -6(3 + 4a)
-18 + -3a = 21a + (3 * -6 + 4a * -6)
-18 + -3a = 21a + (-18 + -24a)

Reorder the terms:
-18 + -3a = -18 + 21a + -24a

Combine like terms: 21a + -24a = -3a
-18 + -3a = -18 + -3a

Add '18' to each side of the equation.
-18 + 18 + -3a = -18 + 18 + -3a

Combine like terms: -18 + 18 = 0
0 + -3a = -18 + 18 + -3a
-3a = -18 + 18 + -3a

Combine like terms: -18 + 18 = 0
-3a = 0 + -3a
-3a = -3a

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

Combine like terms: -3a + 3a = 0
0 = -3a + 3a

Combine like terms: -3a + 3a = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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