davidh90901
davidh90901 davidh90901
  • 15-10-2018
  • Mathematics
contestada

X-7y=53 -4x-5y=19 solve for x and y

Respuesta :

yellowyarn2003 yellowyarn2003
  • 19-10-2018

Answer:

y = -7; x = 4

Step-by-step explanation:

x - 7y = 53

x = 7y + 53

-4x - 5y = 19

-4(7y + 53) - 5y = 19

-28y - 212 - 5y = 19

-33y = 231

-11y = 77

y = -7

x - 7(-7) = 53

x + 49 = 53

x = 4

Answer Link

Otras preguntas

A reflex arc is controlled by the neurons within the _______________________.
75% of 84 is what number
what was John Hancock role in the war
The Potsdam Declaration a. threatened the use of the atomic bomb b. secured Hirohito's position as emperor c. threatened "prompt and utter destruction" d. ca
A scientist studying insect starts with a population of 10. The population triples every hour. How many insects with be there in 20 minutes.
If we know the force, the distance, and the time we can calculate only power. work and power. only work. neither work or power.
Which sentence does not contain any punctuation errors? a. What time, Lieutenant, must we report for duty? b. What time Lieutenant, must we report for duty? c
only products that are __________ by consumers are produced in a free market.
A reflex arc is controlled by the neurons within the _______________________.
Describe the cartoon's message about early agrarian societies in one sentence: