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

A tabular method that can be used to summarize the data on two variables simultaneously is called:.
El pueblo de nuestra senora la reina de los angeles de porciuncula.
HELP!!!! Thank you! Which list shows the absolute values in order from least to greatest? Select each correct answer. ∣∣−38∣∣, ∣∣34∣∣, ∣∣−78∣∣ ∣∣−110∣∣, ∣∣−45∣∣
6.2 solving systems using substitution worksheet5x-5y=0y=4x+18
A group of campers and one group leader left a campsite in a canoe traveling at a steady 8 km/h. One hour later, the other group leader left left the campsite i
what is 427 / 3 = ? because i dont know
What is the image of the point (5, –3) after a reflection over the line y = x? (3, –5) (–5, 3) (–3, 5) (5, 3)
What is one disorder in the body where some cells no longer have checkpoints that control growth and reproduction?
Which environmental program protects the supply of groundwater?.
How did many northerners respond to the Fugitive Slave Act? What concerns did northerners have slavery in the 1850's?