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

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lilg132
 3 years ago
Best ResponseYou've already chosen the best response.02x + 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

lilg132
 3 years ago
Best ResponseYou've already chosen the best response.0so 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 :)

neverforgetvivistee
 3 years ago
Best ResponseYou've already chosen the best response.2you 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

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

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