shelbydrury shelbydrury
  • 02-03-2017
  • Mathematics
contestada

Solving systems by elemination x+y=3 x-y=1

Respuesta :

dexteright02
dexteright02 dexteright02
  • 02-03-2017
[tex] \left \{ {{x+y=3\:(I)} \atop {x-y=1\:(II)}} \right. [/tex]

by elemination

[tex]\left \{ {{x+\diagup\!\!\!\!y=3} \atop {x-\diagup\!\!\!\!y=1}} \right.[/tex]
[tex]\left \{ {{x=3} \atop {x=1}} \right.[/tex]
-------------
[tex]2x = 4[/tex]
[tex]x = \frac{4}{2} [/tex]
[tex]\boxed{x = 2}[/tex]


Replace the found value of "x", to find the value of "y"
[tex]x+y=3\:(I)[/tex]
[tex]2 + y = 3[/tex]
[tex]y = 3 - 2[/tex]
[tex]\boxed{y = 1}[/tex]

Answer:
X = 2
Y = 1
Answer Link

Otras preguntas

Tirzah wants to put a fence around her garden. She has 22 yards Of fence material. Does she have enough to go all the way around the garden? 4 8/12 6 9/12
In the Dred Scott case, the Supreme Court decided A. the Compromise of 1850 was illegal because it was illegal for Congress to deprive a slave owner of propert
how much in height is 140 centimeters
Jeff uses 3 fifth size strips to model 3/5 he wants to use tenth size strips to model an equivalent fraction how many tenth size strips will he need
write 0.423 as a percent
Can anybody unscramble these for me? They are parts of the body. a. sultgue b. cohealc c.actactar
what is 3x^4+2x^3-5x^2-4 divided by x+2?
Another name for the National Socialist Party was
what makes jurassic time period unique
Nixon resigned from the presidency on August 9 of which year? a. 1973 b. 1974 c. 1975 d. 1976