Question

if x+y=3 and x-y=1, how do we find the answer by substitution method in linear equation

Answer 1

Answer:

x=2 and y=1

Step-by-step explanation:

x+y=3===>x=3-y

x-y=1

(3-y)-y=1

3-2y=1

-2y=1-3

y=-2/-2

y=1

x+y=3

x+1=3

x=3-1

x=2