
Hope that helps.Have a nice day!! ^^
In step two he flipped the fraction back to how it was originally but he was supposed to leave it improper in order to multiply
They are not the same shape or size. hope this helps!
From the given scenario in this item, we can say that the sum of x and y is 500. By the aluminum balance, the equation that we can formulate from this,
0.25x + 0.40y = (500)(0.35)
The system of linear equations that can best express the given is,
x + y = 500
0.25x + 0.40y = 175