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Răspunsuri la întrebare
11.a.)
50x[0.4+0.2(6)-0.(3)]=
=50x(0.4+26-2/9-3/9)=50x(4/10+24/9-3/9)=50x(2/5+8/3-1/3)
=50x(6/15+40/15-5/15)=
=50x41/15=50x41/15=2050/15=136,(6)
b.)
0.1(12)+2.(05)+1.(50)]:[0.(75)x2.4+1.5-0.25:0.5]
=(112-1/99+205-2/99+150-1/99) : (75/99x2.4+1.5-0.125)
=11/99+203/99+149/99) : (75/99x24/10+1.5-0.125)
=363/99: (1800/990+1.5-0.125)
=363/99 : (180/99 + 15/10-125/100)
=363/99:(20/11+3/2-1/4)
=121/33 : (80/44+66/44-11/44)
=121/33 : 135/44
=121/33 x 44/135
=5324/4455
=1.1(950617283)
12.a)
0.(4)+3.(4)] : (0.4+0.1/4)
=(4/9 + 34-3/9) : ( 4/10 + 1/10 : 4)
=(4/9 + 31/9) : (4/10+ 1/10 x 1/4)
35/9 : (4/10 + 1/40)
=35/9 : (16/40 + 1/40)
35/9 : 17/40
=35/9 x 40/17
=1400 / 153
b)
(1.8+1/3) : [0.(4) + 4.(4)]
=18/10 + 1/3) : (4/9 + 44-4/9)
=54/30 + 10/30) : (4/9 + 40/9)
=64/30 : 44/9
=64 x 9 / 30 x 44
=576 / 1320
=0.4(36)