a+ 2b - 3 = 0 , 5a + mb + 7 = 0 find out m value
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a+2b-3=0........................(1)
5a+mb+7=0....................(2)
multiply (1) with 5
5(a+2b-3=0)....................(3)
(3)-(2)
(5a+10b-15=0)
-(5a+ mb+ 7=0)
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10b-mb-22=0
b=22/(10-m)
substitute b
10(22/(10-m))-m(22/(10-m))-22=0
Solve m
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