Answer:
required number is 25
Step-by-step explanation:
let a number be x
so. x-21=71-x
2x=71-21
2x=50
x=50/2
x=25
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Answers & Comments
Answer:
required number is 25
Step-by-step explanation:
let a number be x
so. x-21=71-x
2x=71-21
2x=50
x=50/2
x=25