1) 12x = 7⇒x=7/12≈0,58;
2) 5:x= 8⇒x=5/8≈0,625;
3 )7 х =16 ⇒x=16/7≈2,29
4) 3/8х= 1 9/16⇒3/8х= 25/16⇒8*x=3*16/25⇒x=48/(25*8)=6/25=0,24.
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1) 12x = 7⇒x=7/12≈0,58;
2) 5:x= 8⇒x=5/8≈0,625;
3 )7 х =16 ⇒x=16/7≈2,29
4) 3/8х= 1 9/16⇒3/8х= 25/16⇒8*x=3*16/25⇒x=48/(25*8)=6/25=0,24.