stacy62202
stacy62202 stacy62202
  • 12-05-2016
  • Mathematics
contestada

3x + 7y =47
-4x +7y =19

Respuesta :

JonathanHagen JonathanHagen
  • 24-11-2016
3x+7y=47
-1(-4x+7y=19)

Distribute the -1 and add the equations together...you'll get:

7x=28
x=4

Plug X=4 back in...
12+7y=47
7y=35
y=5
Answer Link

Otras preguntas

How can you tell before you divide 425 by 9 that the first digit of the quotient is in the tens place
Given the data, which nation has the highest population density? Nation Population Land area Australia 21 million 7.7 million sq km Fiji 890,057 18,274
How is John Steinbeck's The Grapes of Wrath characteristic of American life in the 1930s? A. It's a political drama about corrupt politicians taking advantage
How many pints are in 6 gallons? A. 12 B. 48 C. 96 D. 24
Find the new amount. 25 penalties decreased by 32% is penalties
what does "how you selected your presentation category" mean?
What number starts with "n" except for Nine
Why is the climate near the equator warmer than the climate of most other places
Which is a Public Good? Answer choices are below. A. College education B. Bridge C. Stock Investments D. Textbooks
List 5 numbers with a mean of 5