Question

solve x+y=7 and x-y=3 by substitution method​

Answer 1

Answer:

x=5, y=2

Step-by-step explanation:

x+y=7----------(i)

x-y=3-----------(ii)

From (ii) equation

x-y=3

x=3+y

Substituting the value of x in (i) equation

Therefore x+y=7

y+3+y=7

2y=4

y=2

Substituting the value of y in (i) equation

x+y=7

x+2=7

x=5

Answer 2

x=5, y=2

x+y=7, x-y=3

5+2=7, 5-2=3