You can put this solution on YOUR website! -1/2≤4-3x/5≤1/4
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Multiply thru by 5 to get:
(-5/2) <= 4-3x <= (5/4)
Subtract 4 along the line to get:
(-13/2) <= -3x <= (-11/4)
Divide thru by -3 to get:
(11/12)<= x <= (13/6)
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Cheers,
Stan H.