А)5-3а=5-(1×3)=2
5-3a=5-(-3×3)=14
Б)2+y/x=2+(-7,4)/2=-1.7
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А)5-3а=5-(1×3)=2
5-3a=5-(-3×3)=14
Б)2+y/x=2+(-7,4)/2=-1.7