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Solve graphically the system:3x +4y < 12, x-y < 1, x >=20, y >=20. |
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Answer» 3x+4y<12x-y<1 so 4x-4y<43x+4y+4x-4y<12+47x<16so x<16/748/7+4y<12so 4y<12-48/7so 4y<36/7so y<9/7 |
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