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 2 years ago
Please help me with this system. I'm not getting the y or z.
x+2y+z=2
3x+y+z=12
xy2z=1
 2 years ago
Please help me with this system. I'm not getting the y or z. x+2y+z=2 3x+y+z=12 xy2z=1

This Question is Closed

yrivers36
 2 years ago
Best ResponseYou've already chosen the best response.0Can u explain it to me please?

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1are you supposed to use elimation?

yrivers36
 2 years ago
Best ResponseYou've already chosen the best response.0Either elimination or substitution

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1ok we can eleminate z first

selenamalter
 2 years ago
Best ResponseYou've already chosen the best response.0satellite, i wasnt done, i still needed helpp :/

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1\[x+2y+z=2\] \[ 3x+y+z=12\]

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1subtract and get \[4x+y=10\] as one equation with no z in it

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1now \[3x+y+z=12\] \[ xy2z=1\] multiply first equation by 2 get \[6x+2y+2z=24\] \[xy2z=1\] add and get \[7x+y=23\]

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1now we have \[4x+y=10\] and \[7x+y=23\] so solve

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1subtact second one from first and get \[11x=33\] making \[x=3\] now substitute back to find y, and then z

yrivers36
 2 years ago
Best ResponseYou've already chosen the best response.0Where did the y go in the 4x+y=10 and 7x+y=23

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1i subtracted the second equation from the first

yrivers36
 2 years ago
Best ResponseYou've already chosen the best response.0oh you multiplied by 1

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1or if you prefer, multiply the second by 1 and then add,

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1yes exactly it is the same thing

yrivers36
 2 years ago
Best ResponseYou've already chosen the best response.0ok I got it finally thank you so much for your help

satellite73
 2 years ago
Best ResponseYou've already chosen the best response.1\[4x+y=10\] \[7xy=23\] \[11x=33\] etc yw
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