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geo12345679789
Group Title
use substitution method in system of equation to solve :
2xy=10
2x2y=4
a) (2.1)
b) ( 7,4)
c) ( 2.2)
d) ( 8,6)
 10 months ago
 10 months ago
geo12345679789 Group Title
use substitution method in system of equation to solve : 2xy=10 2x2y=4 a) (2.1) b) ( 7,4) c) ( 2.2) d) ( 8,6)
 10 months ago
 10 months ago

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mathmale Group TitleBest ResponseYou've already chosen the best response.0
Pretty please include ALL of the instructions when you post a problem. For example, in this case: "use substitution to solve the following system of linear equations." To get you started: Please solve the first equation for 2x.
 10 months ago

RolyPoly Group TitleBest ResponseYou've already chosen the best response.0
From the first equation, make y as the subject. That is 2xy=10 2xy + y=10 + y 2x = 10 + y 2x10=10 + y  10 2x  10 = y That is y = 2x10. Then substitute y = 2x10 into the second equation to solve for x. Can you do it?
 10 months ago

geo12345679789 Group TitleBest ResponseYou've already chosen the best response.0
i can try thanks
 10 months ago

RolyPoly Group TitleBest ResponseYou've already chosen the best response.0
Tell me what you have got when you finish :)
 10 months ago

geo12345679789 Group TitleBest ResponseYou've already chosen the best response.0
sorry got distracted with something else . its (8,6)
 10 months ago

mathmale Group TitleBest ResponseYou've already chosen the best response.0
Hope it's not confusing for y ou, Geo, to have two different people suggesting that you try two different things. I suggested that you solve the first equation for 2x; RolyPoly suggested you solve it for y. Actually, either approach will work fine. Toss a coin and decide that way which to use on this particular problem. (RolyPoly's is the more traditional.)
 10 months ago

mathmale Group TitleBest ResponseYou've already chosen the best response.0
Substitute your x=8 and your y=6 back into the original equations. Are they both "true"? If so, your solution actually is a solution.
 10 months ago

geo12345679789 Group TitleBest ResponseYou've already chosen the best response.0
its fine , it was right thanks both of y'all
 10 months ago

mathmale Group TitleBest ResponseYou've already chosen the best response.0
Good going! Congrats!
 10 months ago

geo12345679789 Group TitleBest ResponseYou've already chosen the best response.0
thanks
 10 months ago
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