Question

The sum of three conjuctive odd number is 21.find numbers

Answer 1

Answer:

5, 7 & 9

Step-by-step explanation:

let the consecutive odd numbers be x, x + 2, x + 4

$\implies$ $x\:+\:(x+2)\:+\:(x\:+\:4)\:=\:21$

$\implies$ $3x\:+\:6\:=\:21$

$\implies$ $3x\:=\:15$

$\implies$ $x\:=\:\Large\frac{15}{3}$

$\implies$ $x\:=\:5$

Now substitute in x, x+2, x+4

$x\:+\:2\:=\:5\:+\:2\:=\:7$

$x\:+\:4\:=\:5\:+\:4\:=\:9$

The consecutive odd numbers are 5, 7 & 9

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