Question

Решить уровнение 1) 1/2х +1/3х +1/4х=26/27 2) 2 1/3х-2 3/5=1 2/15 3) 4 5/12 - 5 3/5х =2 2/3 4) 5/18 х +2 1/2 = 10 5/6

Answer 1

1)
6/12х+4/12х+3/12х=26/27
13/12х=26/27
х=26/27÷13/12
х=26/27×12/13
х=8/9
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2)
2 1/3х=1 2/15+2 3/5
7/3х=17/15+13/5
7/3х=17/15+39/15
7/3х=56/15
х=56/15÷7/3
х=56/15×3/7
х=8/5=1 3/5
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3)
5 3/5х=4 5/12-2 2/3
28/5х=53/12-8/3
28/5х=53/12-32/12
28/5х=21/12
28/5х=7/4
х=7/4÷28/5
х=7/4×5/28
х=5/16
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4)
5/18х=10 5/6-2 1/2
5/18х=65/6-5/2
5/18х=65/6-15/6
5/18х=50/6
5/18х=25/3
х=25/3÷5/18
х=25/3×18/5
х=30