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