Question

Which 2 equations would you use to solve this system?

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The difference of two numbers is 4. Their sum is 32. What are the numbers?

• x + y = 4
• x - y = 4
• x + y = 32
• x - y = 32

Answer 1

x-y=4

and

x+y=32 is your equation

difference of two number =x-y is equal to 4

sum of two number=x+y is equal to 32

x-y=4.......(1)

x+y=32.......(2)

adding equation 1 and 2

x-y +x+y=4+32

2x=36

x=36/2=16answer

substituting value of y in equation 1

16-y=4

16-4=y

y=12 answer