пусть х - задуманное число
0.14x - 26 +3.2 = -17.2
0.14x = 26-20.4
0.14x = 5.6
x = 40
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пусть х - задуманное число
0.14x - 26 +3.2 = -17.2
0.14x = 26-20.4
0.14x = 5.6
x = 40