Answer:
solution: ( 3 , 6 )


Step-by-step explanation:


make y the subject in equation 2:



insert this in equation 1:






solve for y:



5 kg is more precise because if you said 5212 g, they will be trying to see what the precise answer is so if you say 5 kg that will save all of the work.
P.S.: its not 5212 g, its 5000 g. :)
X = 1/3 yz
3x = yz
y = 3x/z
Answer: It looks like this expression is 16+2 times 36, so the answer is 18 times 36 also 88, they are both equivalent