Answer:

Step-by-step explanation:
we know that
The total fabric that Mrs. Lin needs is equal to

Convert mixed number to an improper fraction



substitute



Convert to mixed number

Okay, so since both y values share the same number, let's add both equations so the y values cancel out leaving us to solve for x.
10x+(-5x)=5x
7y+(-7y)=0
1+24=25
Now we have 5x=25
divide both sides by 5 and we have x=5
Now that we know x=5, we can plug it into one of the problems to find y.
Let's do 10(5) +7y=1
50+7y=1 subtract 5 and we get 7y=-49
divide -7 from both sides and we get y=-7
so there you have it x=5 and y=-7
The answer should be (13+y)/5
Answer: Yes
Step-by-step explanation:
5(-2) + 4(7) = 18
-10 + 28 = 18
28 - 10 =18
18=18