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the sum of 3 numbers is 301. the second number is 3 less than twelve times the first number. the third number is 4 more than seven times the first number. find the three numbers
good luck!
=]

2006-10-11 16:06:03 · 12 answers · asked by NABEELiOS 1 in Science & Mathematics Mathematics

12 answers

the answer is 15, 177, and 109

we are going to make the first number equal to x

#1= x
#2= 12x-3
#3= 7x+4

so... now we add them all

(x)+(12x-3)+(7x+4) =301
20x+1=301
20x=300
x=15 and from that i got my three numbers.

hope that helped :)

2006-10-11 16:11:04 · answer #1 · answered by Maggie Mae 3 · 0 0

Set up your three numbers:
First = x
Second = 12x - 3
Third = 4 + 7x
These come from your second sentence.

The first sentence says the sum is 301. Take the 3 expressions above, add them together, and set it equal to 301

20x +1 = 301
20x = 300
x = 15
12x-3 = 177
4 + 7x = 109

2006-10-11 16:12:05 · answer #2 · answered by PatsyBee 4 · 0 0

Well let the 1st number be X 2nd be Y and the 3rd be Z
X+Y+Z=301
Y=12X-3
Z=7X+4
so put into the main equation is...X+(12X-3)+(7X+4)=301
==>20X+1=301
==>X=15
put back into the Y,Z equation respectively...
Y=12(15)-3
==>Y=177
Z=7(15)+4
Z=109
So the 1st num is 15
2nd is 177
3rd is 109

2006-10-11 16:23:10 · answer #3 · answered by tommy_c 2 · 0 0

a million) 2 + 4 + 6 = 12 2) 5 cases the smallest numbers equals the sum of the different 2. subsequently, the 1st huge form is two 3) the main important huge form equals the sum of the different 2. subsequently, the main important huge form is 6. No different huge form than 4 may be used because of the fact the final huge form contained in the set, subsequently the respond is: 2, 4, 6

2016-10-02 05:18:17 · answer #4 · answered by ? 4 · 0 0

x - first number
y - second
z - third

x + y + z = 301 --eq.1
12x - 3 = y --eq.2
7x + 4 = z --eq.3

subs. eqs. 2 and 3 to the 1st eq.
x + (12x-3) + (7x+4) = 301
x + 12x + 7x - 3 + 4 = 301
20x + 1 = 301
20x = 301-1
20x = 300
x = 15

subs.to eq. 2 and 3
y=12(15) - 3 = 177
z = 7(15) + 4 = 109

2006-10-11 16:13:53 · answer #5 · answered by kezongputi 2 · 0 0

1st=x 2nd=12x-3 3rd=7x+4
20x+1=301
20x=300
x=15
2nd=177
3rd=109

2006-10-11 16:15:33 · answer #6 · answered by Jon S 1 · 0 0

Hi.
a+b+c=301
b=12a-3
c=4a

Now try.

2006-10-11 16:09:37 · answer #7 · answered by Cirric 7 · 0 0

Arg! I despise math.

2006-10-11 16:07:22 · answer #8 · answered by Lucy Lu 4 · 0 0

holy curd, do your own dumb homework, math is pretty easy. just use LOGIC!

2006-10-11 17:57:42 · answer #9 · answered by yukfard 1 · 0 1

today is monday

2006-10-11 16:07:16 · answer #10 · answered by Anonymous · 1 0

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