Question

3m+5n=21;5m+3n=11 solve the following simultaneus equation​

Answer 1

Answer:

m=-1/2. n=9/2

Step-by-step explanation:

First add both equations

3m+5n=21

5m+3n=11

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8m+8n=32

Or

m+n=4

Now subtract both equations

3m+5n=21

5m+3n=11

-. -. -

––––––––

-2m+2n=10

Or

-m+n=5

By addition and subtraction we get two equations now solve them

m+n=4

-m+n=5

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2n=9

n=9/2

Putting the value of n in m+n=4

m+9/2=4

m=4-9/2

m=8-9/2

m=-1/2