Question

5m-4n=10,6m+4n=7 linear equations in two variables​

Answer 1

kuch bhi ha kuch bhi question dal do...

Answer 2

Answer:

You've not asked to find anything that's why i find the value of m and n.

Explanation:

5m-4n=10-----i

6m+4n=7-----ii

Multiply 6 with eq i and multiple 5 with eq ii, we've:

6(5m-4n)=10(6)

30m-24n=60----iii

Ans eq ii becomes

5(6m+4n)=5(7)

30m+20n=35-----iv

Now subtract eq iv from iii, we've :

30m-24n=60

30m+20n=35

By subtracting we got:

-44n=25

n=

$\frac {25}{44}$

n=0.568

Put n=0.568 into sq iv, we've

30m+20(0.568)=35

m=0.788