U kuralindan 7x + 2y+20 = 180
7x+2y=160
ic distan 180-7x = 2x 180=9x x=20
140+2y=160 y=10
x+y= 20+10=30
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Verified answer
U kuralindan 7x + 2y+20 = 180
7x+2y=160
ic distan 180-7x = 2x 180=9x x=20
140+2y=160 y=10
x+y= 20+10=30