ma ajutați și pe mine la Ex 18 tot trebuie sa 8l fac nu ce este încercuit tot va rog dau coroana ,fallow și inima .!!!!!!!!!!!
Răspunsuri la întrebare
Răspuns:
Explicație pas cu pas:
a)
=(7/8+9/8)*5-4
= 16⁽⁸/8⁽⁸*5-4
= 2*5-4
= 10-4
=6
-
=3*(⁴⁾1/3+³⁾1/4+1/12)-1
=3*(4/12+3/12+1/12)-1
= 3*8/12-1
= 24/12-1
=2-1
=1
-
=5-(¹⁵⁾1/2+²⁾1/15+1/30)*5
= 5-(15/30+2/30+1/30)*5
= 5-(18/30⁽⁵*5⁽⁵)
= 5-18⁽⁶/6⁽⁶
=5-3
=2
-
b)
=³⁾1/2+²⁾1/3+1/6
=3/6+2/6+1/6
= 6/6
=1
-
-
=¹⁴⁾1/2+⁷⁾1/4+⁴⁾1/7+²⁾1/14+1/28
=14/28+7/28+4/28+2/28+1/28
= 28/28
=1
=(³⁾5/4+⁴⁾1/3-11/12)*3-15⁰
=(15/12+4/12-11/12)*3-1
= (19/12-11/12)*3-1
= 8/12⁽³*3⁽³-1
=8/4-1
=2-1
=1
-
c)
3⁷/₂₂= (3*22+7)/22= 73/22
2⁵/₃₃= (2*33+5)/33=71/33
³⁾73/22-²⁾71/33
=219/66-142/66
=77⁽¹¹/66⁽¹¹
=7/6
-
2¹/₅=(2*5+1)/5=11/5
=11/5-(³⁾3/5+⁵⁾2/3)-7/30
= 11/5- (9/15+10/15)-7/30
= ⁶⁾11/5-²⁾19/15-7/30
=66/30- 38/15-7/30
= 28/30-7/30
=21⁽³/30⁽³
=7/10
-
-
1³/₁₀=(1*10+3)/10= 13/10
= (³⁾7/8+²⁾5/12-23/24) *3/5+13/10
= (21/24+10/24-23/24)*3/5+13/10
=(31/24-23/24)*3/5+13/10
= 8⁽⁸/24⁽⁸*3/5+13/10
= 1/3*3/5+13/10
= ²⁾1/5+13/10
=2/10+13/10
= 15⁽⁵/10⁽⁵
=3/2
-
-
d)
=(³⁾4/5-⁵⁾2/3)*(²⁾2-1/2)
=(12/15-10/15)*(4/2-1/2)
= 2⁽²/15⁽³*3⁽³/2⁽²
=1/5
-
-
=(²⁾5/9-³⁾1/6+7/18)*(⁷⁾1-1/7)
=(10/18-3/18+7/18)*(7/7-1/7)
= (7/18+7/18)*6/7
= 14⁽⁷/18⁽⁶*6⁽⁶/7⁽⁷
=2/3*1
= 2/3
-
(⁴⁾1/6+³⁾17/8):33/8+4/9
= (4/24+51/24):33/8+4/9
= 55⁽¹¹/24⁽⁸*8⁽⁸/33⁽¹¹+4/9
= 5/3*1/3+4/9
= 5/9+4/9
=9/9
=1
-
-
e)
1⁵/₉= (1*9+5)/9= 14/9
=(³⁾11/12-²⁾13/18):14/9
= (33/36-26/36):14/9
= 7⁽⁷/36⁽⁹*9⁽⁹/14⁽⁷
=1/4*1/2
= 1/8