1
х÷9/10=1;
х = 1 * 9/10
х = 9/10 = 0,9
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2
х÷19=16/19;
х = 16/19 * 19
х = 16
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3
х÷3=5/9;
х = 5/9 * 3
х = 5/3 = 1 2/3
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4
х1/4=4;
х = 4 * 1/4
х = 1
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5
х÷7/13=1;
х = 1 * 7/13
х = 7/13
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6
х÷2/18=18;
х = 18 * 2/18
х = 2
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7
х÷10=1/25;
х = 1/25 * 10
х = 1/5 * 2/1
х = 2/5
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8
х÷3/10=2
х = 2 * 3/10
х = 6/10 = 3/5
или х = 0,6
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