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d1i1m1o1n [39]
4 years ago
8

I really need help with this section

Mathematics
2 answers:
Tpy6a [65]4 years ago
5 0

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.

頑張って!

adell [148]4 years ago
5 0
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.
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