Question

what number should be added by -1 so as to get 5 by 7​

Answer 1

you should add 8 to -1 in order to get 7.hope u like my answer

Answer 2

let the required number be x

then,

x + (-1) = 5/7

x-1=5/7

x=5/7 + 1

x= (5+7)/7

x=12/7

hence the required no. is 12/7

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