babytinkerbell2 babytinkerbell2
  • 26-02-2015
  • Mathematics
contestada

Solve the system by addition. Give the y-value of the solution.
3x + 2y = 22 and 5x + 3y = 35

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 26-02-2015
so we need to cancel out one of the placeholders
lets cancel out he y terms

3x+2y=22
5x+3y=35
multply first equation by 3 and second by -2
9x+6y=66
-10x-6y=7=-70
add them together
9x-10x+6y-6y=66-70
-x=-4
multipoly -1
x=4

subsitute
3(4)+2y=22
12+2y=22
subtract 12
2y=10
divide 2
y=5

x=4
y=5
Answer Link

Otras preguntas

Even though they did not take place in the story, which of the following situations would fit the story of Beowulf thematically? A. Beowulf falls in love wit
The spreading of soccer around the world is an example of cultural __________. a. diffusion b. acculturation c. assimilation d. appropriation
what is the least common facter of 10 and 6
One day, Rocket Boy flew 23 times the distance automan travelled in his car. If Rocket Boy flew 9936 km, what was the total distance thy covered
why is it hard to breathe at higher elevations
What is the main difference between DNA and RNA?
A net force of 100 newtons is applied to a wagon for 5 seconds. This causes the wagon to undergo a change in momentum of
Which characteristic of minerals is represented in this picture? A. cleavage B. fracture C. hardness D. streak
Which organ is being described in the following sentence? "If this organ malfunctions, all other body systems would be deprived of nutrients" ~My best guess: Br
what would be one positive result of Italian unification?