180-45=2a

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Solution for 180-45=2a equation:


Simplifying
180 + -45 = 2a

Combine like terms: 180 + -45 = 135
135 = 2a

Solving
135 = 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
135 + -2a = 2a + -2a

Combine like terms: 2a + -2a = 0
135 + -2a = 0

Add '-135' to each side of the equation.
135 + -135 + -2a = 0 + -135

Combine like terms: 135 + -135 = 0
0 + -2a = 0 + -135
-2a = 0 + -135

Combine like terms: 0 + -135 = -135
-2a = -135

Divide each side by '-2'.
a = 67.5

Simplifying
a = 67.5

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