bsaygilii bsaygilii
  • 03-02-2020
  • Mathematics
contestada

2x+3y=15
x+y=6
work out the values of x and y

Respuesta :

ochemgp20 ochemgp20
  • 03-02-2020

Answer:

x=3

y=3

Step-by-step explanation:

x = 6-y

-plug in (6-y) into first equation

2(6-y)+3y = 15

12-2y+3y=15

-2y+3y = 3

y=3

x=6-3

x=3

double check:

(2*3) + (3*3) = 6 + 9 = 15

3 + 3 = 6

Answer Link
gcantiga44
gcantiga44 gcantiga44
  • 03-02-2020

Answer:

x = 3

y = 3

Step-by-step explanation:

2x + 3y = 15

x + y = 6

2x + 3y = 15

x(-3) + y(-3) = 6(-3)

2x + 3y = 15

-3x - 3y = -18

Add:

2x + 3y = 15

-3x - 3y = -18

- x = -3

x = 3

Substitute x to any of the equation:

x + y = 6

3 + y = 6

y = 6 - 3

y = 3

Answer Link

Otras preguntas

Dakota Mining Company pays its bills and employees with checks drawn on a bank from another part of the country. Checks usually take about three days to clear t
Two metal disks, one with radius r = 2. 50 cm and the other with radius r = 5. 00 cm are welded together and
What is the ratio of urms to ump for a certain gas at a given temperature?
Archery Vocab: What is an Index Vane
please asap correct answer gets brainliest
4. 1. 3 Quiz: Working in Groups Question 2 of 5 A group completes its project but gets a bad grade because the project doesn't meet most of the requirements. Wh
Who created the highest selling artwork by a living artist?.
SOMEONE, PLEASE HELP ME :/
which elements were included in the negative’s rebuttal? check all that apply.
solve 11 ≤ w + 3.4 i dont know the answer please help me