The sum of the two number is 21 and their different is 3 find the number
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let no be the =x
let 2 no be x+1
let 3 no be x+2
x +x+1 x+2=21
3x+3=21
3x=21-3=19
3÷19
let 2 no be x+1
let 3 no be x+2
x +x+1 x+2=21
3x+3=21
3x=21-3=19
3÷19
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