Question

I really need help with this section

Answer 1

Q1
Since the sum of 3 number be 105
So
5x+3x+7x=105
15x=105
X=7
1st number=35
2nd number=21
3rd number =49

Q2
Let first number be=x
Second number be=2x
Sum of this two number is 24
so x+2x=24
3x=24
X=8
1st number=8
2nd number=16

Hope this can help.

Answer 2

Looks like you did most of it.

The next step would be setting them equal to 105, like the problem suggests.

`5z+3x+7x=105`

`15x=105`

`x=7`

Then we can plug back in to find the numbers.

`5*7=35`

`3*7=21`

`7*7=49`

`35+21+49=105`

The three numbers are
`35, 21, 49`.

Hope this helps.

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