Question

what are those two numbers whose sum is 90 and difference is 10.​

Answer 1

Step-by-step explanation:

a+b=90. a–b=10

a+b+a–b=90+10

2a=100

a=100/2

a=50 ANS:1

a+b=90

50+b=90

b=90–50

b=40 ANS:2

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