9a-21-3a=9a-24+a

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Solution for 9a-21-3a=9a-24+a equation:


Simplifying
9a + -21 + -3a = 9a + -24 + a

Reorder the terms:
-21 + 9a + -3a = 9a + -24 + a

Combine like terms: 9a + -3a = 6a
-21 + 6a = 9a + -24 + a

Reorder the terms:
-21 + 6a = -24 + 9a + a

Combine like terms: 9a + a = 10a
-21 + 6a = -24 + 10a

Solving
-21 + 6a = -24 + 10a

Solving for variable 'a'.

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

Add '-10a' to each side of the equation.
-21 + 6a + -10a = -24 + 10a + -10a

Combine like terms: 6a + -10a = -4a
-21 + -4a = -24 + 10a + -10a

Combine like terms: 10a + -10a = 0
-21 + -4a = -24 + 0
-21 + -4a = -24

Add '21' to each side of the equation.
-21 + 21 + -4a = -24 + 21

Combine like terms: -21 + 21 = 0
0 + -4a = -24 + 21
-4a = -24 + 21

Combine like terms: -24 + 21 = -3
-4a = -3

Divide each side by '-4'.
a = 0.75

Simplifying
a = 0.75

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