-7,58r+12+3,4=(-10+3,4)-7,98r
-7,58r+7,98r=-10+3,4-12-3,4
0,4r=-2
r=-2:0,4
r=-20:4
r=-5
Ответ: -5
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-7,58r+12+3,4=(-10+3,4)-7,98r
-7,58r+7,98r=-10+3,4-12-3,4
0,4r=-2
r=-2:0,4
r=-20:4
r=-5
Ответ: -5