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Mathematics 20 Online
OpenStudy (anonymous):

solve : -7 less than or equal to 1 minus 2x<7 .

OpenStudy (anonymous):

-7 <= 1-2x < 7 subtract 1: -7-1 <= -2x < 7-1 -8 <= -2x < 6 Divide by 2: -4 <= -x < 3 Divide by -1 (which flips the direction of signs): -3 < x <= 4

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