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ritakulikova9
@ritakulikova9
July 2022
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Реши уравнение, используя основное свойство пропорции (если a/b=c/d, то a⋅d=b⋅c)
0,3/y+9=0,7/y−2
СРочно ,даю 20 баллов
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AD0LF
0.3/y+9=0.7/y-2
0.3*(y-2)=(y+9)*0.7
0.3y-0.6=0.7y+6.3 переносим
-0.4у=6.9
y=-6.9/0.4
y=-17.25
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Answers & Comments
0.3*(y-2)=(y+9)*0.7
0.3y-0.6=0.7y+6.3 переносим
-0.4у=6.9
y=-6.9/0.4
y=-17.25