aa2228820 aa2228820
  • 27-03-2020
  • Mathematics
contestada

Solving using elimination
-7x-y=-17
7x-5y=-1

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 27-03-2020

Answer:

x=2, y=3

Step-by-step explanation:

-7x-y=-17

7x-5y=-1

Add the two equations together to eliminate x

-7x-y=-17

7x-5y=-1

-------------------

  -6y = -18

Divide by -6

-6y/-6 = -18/-6

y = 3

Now we need to find x

7x -5y = -1

7x -5(3) = -1

7x -15 = -1

Add 15 to each side

7x -15+15 = -1+15

7x = 14

Divide by 7

7x/7 = 14/7

x =2

Answer Link

Otras preguntas

carlos and maria drove a total of 197 miles in 3.8 hours. carlos drove the first part of the trip and averaged 55 miles per hour. maria drove the remainder of t
1) Enemies not killed were sent to the _______? 2) WWII alliance of Germany, Italy and Japan formed the ___________? 3) "A day that will live in infamy" was ___
An exam consists of 10 true-or-false questions. If a student guesses at every answer, what is the probability that he or she will answer exactly 6 questions cor
Describe the location and importance of cilia and mucus in the respiratory system.
Romeo openly challenges death as long as he can marry Juliet. Why is this ironic?
Which sentence has an active verb? An exercise video was made by our class. I wrote an essay about the benefits of exercise. I was given a free pass to the l
words that were shakespeare's day but are not in use today are considered to be?
What would happen if there was no condensation stage in the water cycle?
During the Middle Ages, popes and monarchs disagreed most often about
Simplify the expression 3(2y-8)-2y(5-y)