Answer:
7,5 kg = 19,20.
Step-by-step explanation:
19,20/7,5
= 2,56 $
(2,56 * 7,5 =19,20)
To solve problems like this you can either graph or solve mathematically. To do the ladder we need to solve for one variable at a time. So lets cancel one variable out.
Multiply equation 1 by 2
This will give 4x-2y=14
Now we can get rid of y by subtracting 2 from 1
This will give x=9
Plug back in to either equation, i will use equation 2
3(9)-2y=5 simplify
-2y=-22 solve
Y=11
The answer to one would be 25534