4(45)=9a

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Solution for 4(45)=9a equation:


Simplifying
4(45) = 9a

Multiply 4 * 45
180 = 9a

Solving
180 = 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.
180 + -9a = 9a + -9a

Combine like terms: 9a + -9a = 0
180 + -9a = 0

Add '-180' to each side of the equation.
180 + -180 + -9a = 0 + -180

Combine like terms: 180 + -180 = 0
0 + -9a = 0 + -180
-9a = 0 + -180

Combine like terms: 0 + -180 = -180
-9a = -180

Divide each side by '-9'.
a = 20

Simplifying
a = 20

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