Question

a+ 2b - 3 = 0 , 5a + mb + 7 = 0 find out m value

Answer 1

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