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7(y+3) - 2 (x+2) = 14, 4(y - 2 ) +3(x - 3) = 2. |
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Answer» Answer: =>7y+21-2x-4=14 =>7y+17-2x=14 =>7y-2x=14-17 =>7y-2x=-3 ------1st equation 4(y-2)+3(x-3)=2 =>4y-8+3x-9=2 =>4y+3x-17=2 =>4y+3x=2+17 =>4y+3x=19 ------2nd equation 3[7y-2x=-3] 2[4y+3x=19] 21y-6x=-9 -------3rd equation 8y+6x=38 -------4th equation by elimination adding EQATION 3 and 4 we get 29y=29 =>y=1 put 'y' is equal to 1 in equation 3 7-2x=-3 -2x=-10 =>x=5 therefore y=1,x=5 |
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