25-10-2018
Mathematics

contestada

Solve the simultaneous equation:
3x+y=-4
3x-4y=6

Respuesta :

choixongdong choixongdong

25-10-2018

3x+y=-4

3x-4y=6

--------------subtract

5y = -10

y = -2

Substitute y = -2 into 3x + y = -4

3x + (-2) = -4

3x - 2 = -4

3x = -2

x = -2/3

Answer

Solution x = -2/3, y = - 2 OR (-2/3 , - 2)

Answer Link

Otras preguntas

What is the equation to determine the volume of a solid cube? O V = (7/4)*R^2 *h O V=|| wh O V = (4/3)*7*R^3 O V = m*d^2

50 points + geometry No one is helping me :( BC bisects LABD.

việt nam đã có chủ nghĩa xã hội chưa

I WILL MARK BRAINLIEST! What is the surface area and the volume of this Cylinder?

How does poverty impact a substance abuser?

How to solve this pls? 20 + 46 - 11ab - 6b

The population of a municipality before 2 years was 60,000 and the rate of annual growth of population is 2%. If the numbers of in-migrants and out-migrants at

A force of 10N makes an angle of 30 degree with y-axis. The magnitude of X component will be?

Select all ratios equivalent to 5:2.

What is the function of fill handle ?