Question

The solution of the equation x-y=10andx+y=70 is ?​

Answer 1

Answer:

(x = 100, y= 90)

100 - 90 = 10

(x = 60 , y=10)

60 + 10 = 70

Answer 2

Answer:

x=40 ; y=30

Step-by-step explanation:

x-y=10 (given)

x=y+10            

x+ y =70(given)             .(1)

By substituting the value of x=y+10 in (1) we get

(y+10)+y=70

y+ y=70-10

2y=60

y=60/2

y=30

Now,

Using (1)

x+30=70

x=70-30

x=40