Question

the sum of two numbers is 90 and their difference is 10

Answer 1

Answer:

let the numbers x and y

acc. to the question

x+ y =90 _____1

x-y=10 ______2

adding 1 and 2 we get

2x=100

x= 50

putting it in 1 we get

y=40

Step-by-step explanation:

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Answer 2

Answer:

50+40

Step-by-step explanation:

___+___= 90

50+40=90

___-___=10

50-40=10