Question

Two equations are given below: m + 4n = 8 m = n - 2 What is the Solution ?

a. 4,6
b. 2,4
c. 0,2
d. 6,8

Answer 1

m+4n=8
m=n-2
we see that m=n-2
so we can subsitute 'n-2' for m in the first equation
(n-2)+4n=8
n-2+4n=8
5n-2=8
add 2 to both sides
5n=10
divide by 5
n=2
subsitute
n=2
m=n-2
m=2-2
m=0

m=0
n=2

the answer is c. 0,2