a) 1, 05 * 2/3- 0,46=105/100 *2/3- 45/100= 7/10 -45/100= 70/100- 45/100=25/100= 0,25
b) 2 1/2 : 3 3/4 + 2 1/3+ ( 1/6*2)*6= 5/2 *4/15+7/3+2= 2/3+ 7/3+2=3+2=5
c) 2 2/5* 1 7/8- ( 1 1/2*2)+ ( 1/2*3)*3= 12/5* 15/8-3+ 9/2= 4,5+3+ 4,5= 12
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a) 1, 05 * 2/3- 0,46=105/100 *2/3- 45/100= 7/10 -45/100= 70/100- 45/100=25/100= 0,25
b) 2 1/2 : 3 3/4 + 2 1/3+ ( 1/6*2)*6= 5/2 *4/15+7/3+2= 2/3+ 7/3+2=3+2=5
c) 2 2/5* 1 7/8- ( 1 1/2*2)+ ( 1/2*3)*3= 12/5* 15/8-3+ 9/2= 4,5+3+ 4,5= 12