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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)
 9 months ago
 9 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)
 9 months ago
 9 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.
 9 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?
 9 months ago

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

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

geo12345679789 Group TitleBest ResponseYou've already chosen the best response.0
sorry got distracted with something else . its (8,6)
 9 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.)
 9 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.
 9 months ago

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

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

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