100+125+100+2x+140+(3x-45) = 6-2x180
solving one side
100 + 125 + 100 + 140 = 465
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465 + 2x + (3x - 45 ) = 6 - 2x 180
3x + 2x + 465- 45 = 6 - 360x
360x + 3x +2x = -465 + 45 + 6
365x = -414
x= -414/ 365 = -1. 134
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Answer
x= -414/ 365 = -1. 134