Solve for a, b, c
c=180
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180=405-3a
Consider the first equation. Add 360 and 45 to get 405.
405-3a=180
Swap sides so that all variable terms are on the left hand side.
-3a=180-405
Subtract 405 from both sides.
-3a=-225
Subtract 405 from 180 to get -225.
a=\frac{-225}{-3}
Divide both sides by -3.
a=75
Divide -225 by -3 to get 75.
a=75 b=180 c=180
The system is now solved.
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