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anonymous
 5 years ago
Solve using elimination method
8x  9y = 8.5
7y  2x = 4.5
anonymous
 5 years ago
Solve using elimination method 8x  9y = 8.5 7y  2x = 4.5

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay, 8x  9y = 8.5 >equation A 7y  2x = 4.5 >equation B equation B can be written as 2x + 7y = 4.5

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0now, in order to do elimination of variables, you have to find the least common multiple for coefficients in both equations one of the variables, say x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0multiply eq. 1 by 7 and eq. 2 by 8 and then subtract both of them you will get an eq. in terms of y.........solve it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the LCM of 8 and 2 is 8, so multiply equation B by 4 to get 8x + 28y = 18

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0add the new equation to equation A to get rid of the variable x (or eliminate it) . then you will have the equation in terms of y. Solve that equation. find out the value of y and substitute in one of the equations to get the value of x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0she just wants answers.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ya i figured that. I am not going to do her problems for her. I can only show her how to do the problem
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