Question

Solve the system.

{m+n=5
{m−n=3

Use the substitution method.

Answer 1

m - n = 3
m = 3 + n

Substitute this value of m in equation 1,
3 + n + n = 5
2n = 5 - 3
n = 2 /2
n = 1

Substitute the value of n in equation 2,
m - 1 = 3
m = 3 + 1= 4

In short, Your Answers are m = 4 and n = 1

Hope this helps!