Question

1. x + y = 25
x - y = 15​

Answer 1

Answer:

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Step-by-step explanation:

x + y = 25

x = 25 - y

In equation 2nd:-

Put x = 25 - y

x - y = 15

(25 - y) - y = 15

25 - y = 15 + y

25 - 15 = y + y

2y = 10

y = 5

For x

x = 25 - y

x = 25 - 5

x = 20