BlackXOut BlackXOut

16-06-2021
Mathematics

contestada

5x+3y=27
7x+9y=51
I'll give brainliest

Respuesta :

todoroxi77 todoroxi77

16-06-2021

7(5x+3y=27)
-5(7x+9y=51)
———————
35x+21y=189
-35x-45y=-255
————————
-24y=-66
Y=-66/-24

Y=2.75
——————-
Now replace Y with one of the equations to find x
—————
5x+3(2.75)=27
5x+8.25=27

5x=27-8.25
X=18.75/5
X=3.75
——————
Final answer =
X=3.75
Y=2.75

Answer Link

Otras preguntas

what is a square root and show do i solve for them

Choose the words you need to eliminate in these fragments to make them complete sentences. After she came home. Before I’ll learn to ski. Now that my check has

Margot's dad has 7 striped ties and 21 solid ties. What is ratio striped ties to solid ties

In some areas of the world, some people must walk over a mile to get access to water. This statement best supports which economic concept? shortage allocation

i cant figure this one out, can anyone help?

which of these is a form of risk glorification found in media

tanner and three neighborhood friends are buying a basketball hoop that costs 249.84. if the cost is divided equally, how much will each person pay?

Can someone help?????

most profitable commodity that the Virgina colonists were able to trade was?

If the length of HJ is 7 find x