Question

4m+6n=54;3m+2n=28 find m and n

Answer 1

Answer:

m = 6    n = 5

Step-by-step explanation:

4m + 6n = 54  -  i ,  3m + 2n = 28  -ii

multiply eq. (ii) by 3

4m + 6n = 54  ,   9m + 6n = 84

on subtracting (i) by (ii)

  9m +    6n =    84

(-)4m +(-) 6n = (-)54

  5m            =  30

                m = 30/5

                m = 6

4m + 6n = 54

4(6) + 6n = 54

24 + 6n = 54

6n = 54-24

6n = 30

n = 30/6

n = 5