Answers

2015-08-02T18:04:00+05:30
Y=180-4x
3y=3(180-4x)
3y=540-12x
-5x+3y=30
so,-5x+540-12x=30
-5x-12x=30-540
-17x=-510
17x=510
x=510/17
x=30
4x=30x4
=120
4x+y=180
120+y=180
y=180-120
y=60

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