Question

4m+5n=9 2m+7n=-5 solve the simultaneously equation by eliminating method

Answer 1

Answer:

4m+5n=9.......eq1

2m+7n=5=2(2m+7n=5)=4m+14n=10

substrate eq 1 from 2

4m+14n=10

4m+5n=9

9n=1

n=1/9

4m+5n=9

4m+5(1/9)=9

4m=9-5/9

m=((81-9)/9)/4

=72/9*1/4

=2

m=2