Question

What will be the value of x , if x+y =36 and x-y =6. A) 21 B) 15 C) 6 D) 2​

Answer 1

Step-by-step explanation:

x+y=36 let 1

x-y=6 let 2

1+2

2x=42

x=21

substitute x in 1

y=15

Answer 2

Answer:

if x + y = 36.

x - y = 6

y = x-6

so x + x - 6 = 36

2x - 6 = 36

2x = 42

x = 42 /2 = 21

x = 21 , y = x - 6 which is equal to 15

so x = 21 , y = 15