72-9a=68-4a

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Solution for 72-9a=68-4a equation:


Simplifying
72 + -9a = 68 + -4a

Solving
72 + -9a = 68 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
72 + -9a + 4a = 68 + -4a + 4a

Combine like terms: -9a + 4a = -5a
72 + -5a = 68 + -4a + 4a

Combine like terms: -4a + 4a = 0
72 + -5a = 68 + 0
72 + -5a = 68

Add '-72' to each side of the equation.
72 + -72 + -5a = 68 + -72

Combine like terms: 72 + -72 = 0
0 + -5a = 68 + -72
-5a = 68 + -72

Combine like terms: 68 + -72 = -4
-5a = -4

Divide each side by '-5'.
a = 0.8

Simplifying
a = 0.8

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