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a) 8-7:{6-5:[4-3:(2-2:2)]}
b) {[(7*3-5)+2*6]:4+5}*10-[(4+3*3)*5-60]


Răspuns :

a)8-7:{6-5:[4-3:(2-2:2)]}=
8-7:{6-5:[4-3:(2-1)]}=
8-7:[6-5(4-3:1)]=
8-7:[6-5:(4-3)]=
8-7:(6-5:1)=
8-7:1=
8-7=1

b){[(7x3-5)+2x6]:4+5}x10-[(4+3x3)x5-60)]}=
{[(21-5)+2x6]:4+5}x10-[(4+3x3)x5-60)]}=
[(16+12):4+5]x10-[(13x5-60)]=
(24:4+5)x10-(65-60)=
(6+5)x10-5=
11x10-5=105

[tex]a)8-7:{6-5:[4-3:(2-2:2)]}=[/tex]
[tex]8-7:{6-5:[4-3:(2-1)]}=[/tex]
[tex]8-7:[6-5(4-3:1)]=[/tex]
[tex]8-7:[6-5:(4-3)]=[/tex]
[tex]8-7:(6-5:1)=[/tex]
[tex]8-7:(6-5)[/tex]
[tex]8-7:1=[/tex]
[tex]8-7=1[/tex]

[tex]b){[(7*3-5)+2*6]:4+5}*10-[(4+3*3)*5-60]=[/tex]
[tex]{[(21-5)+12]:4+5}*10-[(4+9)*5-60)]=[/tex]
[tex][(16+12):4+5]*10-[(13*5-60)]=[/tex]
[tex](24:4+5)*10-(65-60)=[/tex]
[tex](6+5)*10-5=[/tex]
[tex]11*10-5=10[/tex]
[tex]110-5=105[/tex]