boybaby boybaby
  • 03-01-2020
  • Mathematics
contestada

what is the solution of the systrem 2x - y = -7 4x - y = -4

Respuesta :

Yang100
Yang100 Yang100
  • 03-01-2020

Answer:

x=3/2, y=10. (3/2, 10).

Step-by-step explanation:

2x-y=-7

4x-y=-4

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

-2(2x-y)=-2(-7)

4x-y=-4

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

-4x+2y=14

4x-y=-4

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

y=10

2x-10=-7

2x=-7+10

2x=3

x=3/2

Answer Link

Otras preguntas

HALP MEH PLEZ! c. Which word describes an ancestor? a. autopsy b. genocide c. homicide d. progenitor
lines g and h are parrallel and m ∠ 2 =135. what m ∠ 7
Inca irrigation was practiced on a small scale, with each family farm taking responsibility for building its own system. True or false?
explain how the number of pieces in a whole relates to the size of each piece
Solve for z. z - 12 = -9
Mark for review (Will be highlighted on the review page) 11. A feature in Excel that allows you to graphically display in a single cell the trend across a range
True or false ? Victory gardens were used in World Wars I and II to augment the public food supply and aid the war effort.
suppose two rectangles are similar with a scale factor of 2. What is the ratio of their areas?
Which president supported the creation of the environmental protection agency
What are the atmospheric layers?