2a+d=180

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Solution for 2a+d=180 equation: 


Simplifying
2a + d = 180

Solving
2a + d = 180

Solving for variable 'a'.

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

Add '-1d' to each side of the equation.
2a + d + -1d = 180 + -1d

Combine like terms: d + -1d = 0
2a + 0 = 180 + -1d
2a = 180 + -1d

Divide each side by '2'.
a = 90 + -0.5d

Simplifying
a = 90 + -0.5d

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