1 .чему равен модуль числа -2,3
1)-2,3
2)2,3
3)0
4)-2,3и2,3

2 вычислите: |-3/7|+|-1/14|

3 найдите (у) если |у|=7,2
1)0
2)7,2
3)-7,2
4)7,2и -7,2
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