dianewade15 dianewade15
  • 03-02-2015
  • Mathematics
contestada

How do I solve x+4y=22
-x+5y=23

Respuesta :

eu99li
eu99li eu99li
  • 03-02-2015
x+4y=22
-x+5y=23            (+)
9y=45
y=5

x+4*5=22
x=22-20
x=2
Answer Link
mac32b mac32b
  • 03-02-2015
{ x + 4y = 22     ( + x - x = 0 )
{ - x + 5y = 23

4y + 5y = 22 + 23
9y = 45
  y = 45 
         9
  y = 5

x + 4y = 22
x + 4 . 5 = 22
x + 20 = 22
x = 22 - 20
x = 2

S = { 2 , 5 }


Answer Link

Otras preguntas

The percentage of voters who must be present for a meeting to count is referred to as
if y varies directly as x, and y=8 when x=5, find y when x=10
Witch statements describe pandemics? Confined to a specific geographic area,easily spread to a new areas,highly contagious disease,the bubonic plague or the com
It is advisable to spend less money on wants than you do on needs. true or false?
Brandon steals Frank’s watch. Brandon is caught by the police. What kind of court will this matter be tried in? a. Civil court b. Criminal court c. Appellate
Which of the following is an Argentinian cowboy
multiple choice Which of these are not verbs of communication? contestar mirar decir comer hablar llamar vivir
−6>−30−4x Write your answer as an inequality
What is the lowest fraction of 0.875cm
simplify 8 over 2+ 2i