Question

दिलेलं एकसामयिक समीकरण सोडवा: 5m - 3n = 19; m - 6n = -7

Answer 1

5m - 3n = 19 --------(1)
m- 6n = -7 -----------(2)

mutipying eq^n no. 2 by 5
: .5m- 30n = -35 -----------(3)

subtracting equation no.1 from 2
5m - 30n = -35
- 5m - 3n = 19
--------------------------
-27n = -54
n = -54/-27
n = 2

put n=2 in equation no. 2
m - 6×2 = -7
m -12 = -7
m = -7 +12
m = 5

(m,n)= (5,2) is the soln of given problem

Answer 2

Answer:

5m – 3n = 19 .....(I)

m – 6n = –7 .....(II)

Multiplying (I) with 2 we get

10m – 6n = 38 .....(III)

m – 6n = –7 .....(IV)

Subtracting (IV) from (III) we get

10m-m-6n-(-6n)=38-(-7)

⇒9m=45

⇒m=45/9

=5

Putting the value of m = 5 in (II) we get

5-6n=-7⇒-6n=-7-5

⇒-6n=-12

⇒n=-12/-6

=2