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anonymous
 4 years ago
4X  5Y = 18 , 5X + 4Y = 2
anonymous
 4 years ago
4X  5Y = 18 , 5X + 4Y = 2

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Solve for x in terms of y in one equation, then substitute that expression for x in second equation and solve for y. Plug the solution for y back into you expression for x and solve for x. Check that your solution satisfies each equation!

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.04X  5Y = 18.............1 multiply by 5 5X + 4Y = 2...............2 multiply by 4 20x25y =90...................1 20x+16 y = 8...................2 multiply by 1 20x25y =90...................1 20x16y=8.......................2 add equation 1 to equation 2 41y=98 y=2.39 sub value of y in any equation 4x5(2.39)=18 x=7.4875 you are welcome .

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0waleed made an error: 5 x equation 1 should be = 90, not 90. Sign was wrong. Good luck.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yeah .. you are right ! .... thnx ... I do mistake all time .. one day i will be better 4X  5Y = 18.............1 multiply by 5 5X + 4Y = 2...............2 multiply by 4 20x25y =  90...................1 20x+16 y = 8...................2 multiply by 1 20x25y =  90...................1 20x16y = 8.......................2 add equation 1 to equation 2 41y=82 y = 2 sub value of y in any equation 4x5(2)=18 x=2
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