courtneygaffney4755
courtneygaffney4755 courtneygaffney4755
  • 04-02-2019
  • Mathematics
contestada

can someone explain the elimination method to me for this problem?

can someone explain the elimination method to me for this problem class=

Respuesta :

Аноним Аноним
  • 04-02-2019

Answer:

x = -8, y = 4.

Step-by-step explanation:

5x + 3y = -28

5x + 10y = 0

If we subtract these 2 equations we eliminate  x:-

0 + 3y - 10y = -28

-7y = -28

y = -28/-7 = 4.

Now substitute y = 4 in the first equation:

5x + 3(4) = -28

5x + 12 = -28

5x = -40

x = -8.

Answer Link

Otras preguntas

Three numbers are in the ratio 6:3:1, and the sum of these numbers is 420. If the first number is reduced by 50%, and the second number is increased by 42, and
Why were the steel plow in the mechanical Reaper important inventions?
colby wants to set sqaure tiles on the top of a box the top of the box is a rectangle 71/2 inches long and 51/2 inches wide how many 1/2 inch tiles would he nee
Suppose x + y = 6 and xy = 4. Find the value of x² y + xy² without solving the equations.
how do you simplify fractoins
which fraction shows 32/48 in simplest form
If a pizza costs 2.85 to make and customer pays 8.95 how much profit have I made as a percentage
A candy distributor needs to mix a 10% fat-content chocolate with a 40% fat-content chocolate to create 100 kilograms of a 16% fat-content chocolate. How many k
The square of a certain negative number is equal to 5 more than one half of the number what is the number
what is 5.71 rounded to the nearest whole number