Answer:
see explanation
Step-by-step explanation:
Given the 2 equations
5x + y = 21 → (1)
x - 3y = 9 → (2)
Multiply (1) by 3 and add the result to (2) to eliminate y term
15x + 3y = 63 → (3)
Add (2) and (3) term by term
(x + 15x) + )- 3y + 3y) = (9 + 63)
16x = 72 ( divide both sides by 16 )
x = 4.5
Substitute x = 4.5 into (1) for corresponding value of y
22.5 + y = 21 ( subtract 22.5 from both sides )
y = - 1.5
Solution is (4.5, - 1.5 )
Answer:
103 msand is the most important thing to be aware of and that is 33454 for the test and of you I a 83838
Step-by-step explanation:
N is a good thing to do if a ebay producs is not 30th and I have no doubt about that earning a lot of vid I have trash a to out test future I it speak spanish or any android of or for android phone that is a great idea to get realistic and get
Answer: 3x-5y=-9 is simplified to y=3/5x+9/5
x+2y=8 is simplified to y=-1/2x+4
3y=2(2+2y); 3y=4+4y; -y=4; y=-4;
Answer:
1.25 cans or 1 1/4
Step-by-step explanation:
5 divided by 4 = 1.25
