please i need help with the processes of these two simultaneous equations!!: 7x + 2y = -4 3x + 4y = 14 and... x/2 + y/3 = 5 x/3 + y/4 = 1
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Originally Posted by lauqui please i need help with the processes of these two simultaneous equations!!: 7x + 2y = -4 3x + 4y = 14 ...(1) ...(2) Working with (1) Now sub this into (2) Can you find x now?
Originally Posted by lauqui x/2 + y/3 = 5 x/3 + y/4 = 1 Use the same process as in my first post. ...(1) ...(2) Working on (1) Now into (2) You can take it from here.... Once you have a solution for x substittue this into either (1) or (2) to find y.
Originally Posted by lauqui 7x + 2y = -4 [1] 3x + 4y = 14 [2] This is another way, known as the "elimination" process: Multiply [1] by -2: -14x - 4y = 8 3x + 4y = 14 [2] Add them up: -11x = 22 x = -2 ; next get y by substituting. Just so you have a headstart on your teacher !
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