bekah5332 bekah5332
  • 04-02-2017
  • Mathematics
contestada

I'm lost.. How do you even start it???

Im lost How do you even start it class=

Respuesta :

konrad509
konrad509 konrad509
  • 04-02-2017
[tex]2x+y=4\\ -x+y=1\\\\ 2x+y=4\\ \underline{x-y=-1}\\ 3x=3\\ x=1\\\\ 1-y=-1\\ y=2 [/tex]
Answer Link
wolf1728
wolf1728 wolf1728
  • 04-02-2017
A) 2x + y = 4
B)  -x + y = 1

Multiply B) by 2
B) -2x + 2y = 2  then add to A)
A) 2x + y = 4

3 y = 6
y = 2

B) -x + y = 1
-x +2 =1
x = 1

Answer Link

Otras preguntas

Explain how you know 6/6 and 1 are equivalent
how did Czar Alexander II's emancipation edict affect the lives of Russian serfs?
how many times greater is one gallon than one quart
Ask Elena if she is interested in learning how to knit.
Use the following statement attributed to the Renaissance humanist Desiderius Erasmus to answer the following question: "Give light, and the darkness will disap
90 questions got 18 wrong what's the percent for correct
All of the following are true about Homer except a. He was a deaf poet. c. He is credited with being the first to put the Epics into writing. b. He wrote the Od
why did the spanish government help established catholic missions
there are 10 pies.4 of the pies are apple. the rest are cherry. what fraction of the pies are cherry?
Does the preamble to the Declaration of Independence indicate reasons why the new independent government might be similarly removed or overthrown? Why or why no