Question

Write a system of two equations using x and y in each for the following.
The sum of two numbers is 170 and their difference is 26.

Answer 1

x+y=170 and y-x=26
y-x=26
y=26+x
x+26+x=170
2x=170-26
2x=144
x=72
x+y=170
72+y=170
y=170-72
y=98

Answer 2

1. x+y = 170
2. x-y = 26