1). 1/3-5/6=(2-5)/6=-3/6=-1/2
х:(-1/2)=8/9. х=-1/2*8/9. х=-4/9
2). 1/6-1/15=3/15=1/5
(х+8/15):1/5=20. х+8/15=1/5*20. х+8/15=4. х=4-8/15. х=3 7/15
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1). 1/3-5/6=(2-5)/6=-3/6=-1/2
х:(-1/2)=8/9. х=-1/2*8/9. х=-4/9
2). 1/6-1/15=3/15=1/5
(х+8/15):1/5=20. х+8/15=1/5*20. х+8/15=4. х=4-8/15. х=3 7/15