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SaFareeKing
Group Title
Solve the system and explain what the results mean according to your scenario.
2x + y = 9
3x + 4y = 26
 2 years ago
 2 years ago
SaFareeKing Group Title
Solve the system and explain what the results mean according to your scenario. 2x + y = 9 3x + 4y = 26
 2 years ago
 2 years ago

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lilg132 Group TitleBest ResponseYou've already chosen the best response.0
2x + y = 9 3x + 4y = 26 2x + y = 9 (multiply by 3) 3x + 4y = 26 (multiply by 2) so we have the same value for x and we can cancel it out 6x + 3y = 27 6x + 8y = 52 5y = 25 y = 5 now use this to work out x
 2 years ago

lilg132 Group TitleBest ResponseYou've already chosen the best response.0
so just so you understand i will show you how to 2x + y = 9 3x + 4y = 26 so we know the value of y = 5 2x + 5 = 9 rearrange 2x = 9  5 2x = 4 x = 2 to check use these answers in the second equation x = 2 y = 5 3(2) + 4(5) = 26 6 + 20 = 26 dont forget to click good answer :)
 2 years ago

neverforgetvivistee Group TitleBest ResponseYou've already chosen the best response.2
you can use elimination of substitution. in this case it's easier to use substitution. subtract 2x from both sides of the first equation to get the y alone y = 9  2x now, you want to plug what y equals into the second equation 3x + 4 (9  2x) = 26 use the distributive property with the 4 3x + 36  8x =26 combine like terms 5x + 36 = 26 subtract 36 from both sides 5x = 10 now divide x = 2 now, with x = 2 plug it into the original equation 3 * 2 + 4y = 26 solve like a regular algebra problem 6 + 4y = 26 4y = 20 y = 5
 2 years ago

neverforgetvivistee Group TitleBest ResponseYou've already chosen the best response.2
dang you beat me to it i really need to work on my typing speed
 2 years ago

neverforgetvivistee Group TitleBest ResponseYou've already chosen the best response.2
lol
 2 years ago

neverforgetvivistee Group TitleBest ResponseYou've already chosen the best response.2
in the first sentence i meant you can use elimination or substitution
 2 years ago
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