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JessNicole
 2 years ago
Someone Please Help!
Solve a system of linear equations using substitution, elimination OR substitution!
3x  y = 137
y = 2x + 99
JessNicole
 2 years ago
Someone Please Help! Solve a system of linear equations using substitution, elimination OR substitution! 3x  y = 137 y = 2x + 99

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irkiz
 2 years ago
Best ResponseYou've already chosen the best response.13x  y = 137 ...........(1) y = 2x + 99 ..............(2) substitute (2) into (1) 3x (2x+99) = 137 try solving it now

nubeer
 2 years ago
Best ResponseYou've already chosen the best response.0put your second equation in first one 3x ( 2x+99) = 137 find x now.

JessNicole
 2 years ago
Best ResponseYou've already chosen the best response.0i got y = 23 for substituting. Now i have 2 more equations that i have to find for graphing and eliminating, can someone help me witht hose 2??

JessNicole
 2 years ago
Best ResponseYou've already chosen the best response.0THANK YOUU!! 2.) 2x + y = 1 x + 4y = 10 3.) 2x + y = 1 3x  y = 16 And i have to solve it by substituting and the other by graphing:\

JessNicole
 2 years ago
Best ResponseYou've already chosen the best response.0sorry, i meant *eliminating* and graphing!

allibear2012
 2 years ago
Best ResponseYou've already chosen the best response.0ok mmmmmmmmhhhhhhhhhhhhhhhhhhh... i am not sure how much help that i will be since i am 10 years old :/

JessNicole
 2 years ago
Best ResponseYou've already chosen the best response.0Oh myyyy haha, at least you know more than me. I'm 17! Your smart. But if you can just try? or start me off and i can try to figure out the rest by myself

allibear2012
 2 years ago
Best ResponseYou've already chosen the best response.0ok i will try... gtg sorry :((

JessNicole
 2 years ago
Best ResponseYou've already chosen the best response.0kay, bye. thanks tho

irkiz
 2 years ago
Best ResponseYou've already chosen the best response.1for 2) by elimination 2x+y=1...........(1) x+4y = 10.......(2) (2) x 2 2x+8y = 20......(3) (3) (1) 7y = 19 k solve it now

JessNicole
 2 years ago
Best ResponseYou've already chosen the best response.0Wait, 2x + 8y = 20, i can't solve it no more, can i ? idk, i'm confused! how do you get (3)  (1) ?

irkiz
 2 years ago
Best ResponseYou've already chosen the best response.1(3)  (1) as in equation (3)  equation(1) to eliminate the 2x which is common in both equations

irkiz
 2 years ago
Best ResponseYou've already chosen the best response.1basically i manipulate (2) so that the x component looks like (1). I then label the manipulated (1) as a new equation (3). (3) and (1) have 2x. so if i take (3)  (1) i will eliminate the 2x and get left with 7y = 19

irkiz
 2 years ago
Best ResponseYou've already chosen the best response.12x + y = 1......(1) 2x + 8y = 20...(3) (3)  (1) 2x  2x +8y  y = 20  (1) 7y = 19

JessNicole
 2 years ago
Best ResponseYou've already chosen the best response.0Ohh! okay okay, i understand.. so y = 2.714 ?

JessNicole
 2 years ago
Best ResponseYou've already chosen the best response.0@irkiz thank you anyways
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