Answer:21
Step-by-step explanation:
x=length
x(x-6)=315
x^2-6x=315
x^2-6x-315=0
(x-21)(x+15)
x=21, x=-15
x cannot be negative so the only answer is 21
Subtract them left to right
The correct options are


<h3>How to find same value of x?</h3>
given that

first find value of x to obtain the equations have the same value of x.
Find the L.C.M between the 6,3

Then Cross multiplication should be done


Hence the correct options are


Learn more about problems on equations, refer:
https://brainly.in/question/742266
#SPJ9
Answer:
12 items in total
Step-by-step explanation:
40-4.5*8=4
leaving 4 dollars to spend on 4 drinks
Answer:
The answer would be 5x-18=13
Step-by-step explanation:
When given five times than a number, 5 would be multiplied by (x) since x can be any number. Less than 18 means subtract 18. Is equal to means an eual sign and the equation is equal to 13.