mat116

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Can you please look over these and let me know if they are right?
1/4(5x-1/2)-5/3<1/3 I got {x|x<51/30}

31-(2x+2)< or equal to 4(x+1)+x I got {x|x>equal to 3.6}

Use elimination method: 4x+5y=-12 and 7x-5y=-76 I got x=-8 and y=4

elimination: 0.3x-0.2y=4 and 0.4x+0.5y=1 I got the solution of (220/23,-130/23)

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