Question

Find the value of x and y if x+y=45 and x-y=5

Answer 1

Answer:

x + y = 45

x - y = 5

Adding both equation

2x = 50

x = 25

Substitute in 1st equation

50 + y = 45

y = 20

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Answer 2

Answer:

x = 25

y = 20

Step-by-step explanation:

x + y = 45

x - y = 5

Both the y's will cancel.

= 2x = 50

= x = 25.

Substitute the value of x in first equation

= 25 + y = 45

= y = 20.