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FIND THE NUMBER.Whose product with 8 is the same as its sum with 49

Sagot :

Let x be the number

x*8=x+49

Simplify them :

8x=x+49
8x-x=49
7x=49
Divide both sides by 7
And the number would be 7 Hurray!!!!

But first we need to make a proof
Proof;
7*8=7+49
56=56 ---> and now we are sure of our answer :D