180=A+4A+5A-9

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Solution for 180=A+4A+5A-9 equation:


Simplifying
180 = A + 4A + 5A + -9

Reorder the terms:
180 = -9 + A + 4A + 5A

Combine like terms: A + 4A = 5A
180 = -9 + 5A + 5A

Combine like terms: 5A + 5A = 10A
180 = -9 + 10A

Solving
180 = -9 + 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.
180 + -10A = -9 + 10A + -10A

Combine like terms: 10A + -10A = 0
180 + -10A = -9 + 0
180 + -10A = -9

Add '-180' to each side of the equation.
180 + -180 + -10A = -9 + -180

Combine like terms: 180 + -180 = 0
0 + -10A = -9 + -180
-10A = -9 + -180

Combine like terms: -9 + -180 = -189
-10A = -189

Divide each side by '-10'.
A = 18.9

Simplifying
A = 18.9

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