all you have to do is add up all the sides and your answer will be 21 cm
Answer: Yes
Explanation: Yes because, sometimes you need to do stuff to get things of your head
I don’t know exactly but I tried the math and it’s either 4 or 5%
Take the second equation [ y - 3x= 5 ] and add 3x to each side: [ y = 3x + 5 ].
Now you can see that the graphs of both equations have the same slopes.
This tells you clearly that their graphs are parallel lines which never intersect.
Therefore, the 'system' of equations has no solution.