22-11-2020
Mathematics

contestada

6) Select the best method to solve the system.

5x-4y=7
4x-4y=12

elimination
substitution

Respuesta :

Cherryokwee Cherryokwee

22-11-2020

Answer:

Elimination

x=-5 and y=-8

Step-by-step explanation:

-(5x-4y=7) <--- Multiply by a negative so that y can cancel out

4x-4y=12

=-5x+4y=-7

4x-4y=12

=-x=5

x=-5

5(-5)-4y=7 <--- plug x back in to solve for y

-25-4y=7

+25 +25

-4y/-4=32/-4

y=-8

Answer Link

Otras preguntas

who comes up with ideas for laws?

in what way was the population of the middle colonies like the population of the united states today?

Christina is making a blanket for her baby granddaughter. The blanket will have ribbon around all 4 edges. There will be:94 feet of ribbon on the top edge94 fee

Why did the Marbury v. madison case happen?

who comes up with ideas for laws?

Joe has been keeping track of his cellular phone bills for the last two months. The bill for the first mont was $38.00 for 100 minutes of usage. The bill for th

Is 0.602 equvalent to 0.62

Circle 6 numbers for a total of 31.8,9,91,5,81,1,1

Joe has been keeping track of his cellular phone bills for the last two months. The bill for the first mont was $38.00 for 100 minutes of usage. The bill for th

The scientific term for a living thing is