If x,y and z are positive integers and 3x=4y=7z, then the least possible value of x+y+z=?

2 answers:

6 0

Integers
positive
okso therefor
3x=some number
4y=some number
7y=some number

therefor, this 'some number' must have factors of 3,4,7

find greatest common multiplule
3=3
4=2 times 2
7=7
3 times 2 times 2 time s7=84

3x=4y=7z=84
solve
3x=84
divide 3
x=28

4y=84
divide 4
y=21

7y=84
divide 7
y=12

so
x+y+z=28+21+12=61

Marrrta [24]2 years ago

6 0

Multiply 3x4x7 to get the lowest number they will all go into. Then divide by the number you're trying to figure out (exp. 84/3=28) X=28 y=21 z=12 :)

You might be interested in

PLEASE HELP ME .......!!

Kruka [31]

Answer:

wait is that a test if it is cheating

Step-by-step explanation:

well the first one go on the bottom 2 row secound one first row third first row but it is in happpy i am not reall good at math XD third last row forth very happy fifth on unhappy sixth very unhappy seven very unhappy eight on very happy i think i got it i did this before i just don't rembear but i tried

7 0

3 years ago

Which accurately labels the cytoplasm?<br><br> W<br> X<br> Y<br> Z

bogdanovich [222]

<h2>Hey there! </h2>

<h2>The accurate answer is:</h2>

<h3>Option Y</h3>

6 0

2 years ago

Read 2 more answers

What is the greatest common factor of 4k, 18k4, and 12?

Setler [38]

Answer: The greatest common factor is 2.

Step-by-step explanation: We are given to find the greatest common factor of the following expressions:

$E_1=4k,~~E_2=18k^4,~~E_3=12.$

<u>Greatest Common Factor:</u> The GCF of two or more numbers (expressions) is the greatest factor that divides all the numbers or expressions.

We have

$E_1=4k=2\times 2\times k,\\\\E_2=18k^4=2\times 3\times 3\times k\times k\times k\times k,\\\\E_3=12=2\times 2\times 3.$