Решите уровнение: 2/7x=2 2/7   (2 и x это целое число)
3/5y=2 9/10 - 1/5
3/7а+2/5=1
3 1/3:r=1 1/3 : 2
y :1 1/2 =2 1/3*1/3
2/7х+3/7х = 2 7/14
m+3/8m=1/4
у - 2/9у = 4 2/3
2/5z +2/3 - 7/15 = 2 1/2
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