Question

solve the following simultaneous equation 5m-3n=19;m-6n=-7​

Answer 1

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5m-3n=19--------(1)

m-6n= -7-----------(2)

Multiplying (2) by 5,

5m-30n= -35-------(3)

Subtracting (3) from (1),

27n=54

n=2

Substituting n=2 in (1),

5m-6=19

5m=25

m=5

Hence, m=5, n=2

Answer 2

Step-by-step explanation:

5m - 3n = 19 m - 6n = -7

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

• SUBTRACT

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

10m - 6n - m + 6n = 38 + 7

9m = 45

m = 5

5 - 6n = -7

6n = 12

n = 2