Wykonaj działania (działania chce )
a) 1,7 : (1cała i 2/3 * 4 całe i 1/2 + 3 całe 5/14 =
b)2,625 - 2/3 * 2 całe 5/14 =
c)(O,45 - 9/40 ) * 111 całych 1/9 +
d) (2,4 + 1 cała 5/7 ) * 4 , 375 =
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a)1,7:(1 2/3*4 1/2 +3 5/14)=1,7:(7 1/2+ 3 5/14)=1,7:(7 7/14+ 3 5/14)=1,7: 4 2/14= 1 7/10 :4 2/14=17/10*14/58=238/290
b)2,625-2/3*2 5/14=2,625-1 8/14=2 5/8-1 8/14=2 35/56- 1 20/56=1 15/56
c)(0,45-9/40)*111 1/9= (0,45-0,225)*111 1/9=0,225* 111 1/9 =225/1000* 111 1/9=9/40*111 1/9=81/360* 111 40/360=81/360*40000=3240000/360
d)(2,4+1 5/7)*4,375=(2 4/10+1 5/7)*4,375=(2 27/70+ 1 50/70)*4,375=4 7/70 * 4,375=4 7/70*4 3/8=287/70*35/8=287/16