Question

Find the solution to the system of equations 4m + 8n = 20 and -4m + 2n = -30.

Answer 1

Answer:

4m + 8 n = 20 (1)

-4m +2n = -30(2)

= 10n = - 10

so n,= -1

putting the value in equation (1) ,we get

4m + 8(-1)=20

4m -8=20

4m = 28

m = 7.

the value of m is 7 and value of n is (-1).