Va rog ajutati-ma!!!!!!!
Răspunsuri la întrebare
Răspuns:
Explicație pas cu pas:
= (²⁾6/5+13/10 ) - [ 82/15- ( ⁶⁾12/5+⁵⁾7/6)]
= (12/10+13/10)- [ 82/15-( 72/30+35/30)]
= 25/10 - ( ²⁾82/15 -107/30)
=25/10-(164/30-107/30)
= ³⁾25/10 - 57/30
=75/30-57/30
= 18⁽⁶/30⁽⁶
= 3/5
-
b)
=( ⁸⁾17/5-⁵⁾13/8) - [ (⁵⁾11/4-⁴⁾6/5)-7/10 ]
= (136/40-65/40)- [( 55/20-24/20 ) -7/10]
= 71/40- (31/20-²⁾7/10)
= 71/40-(31/20-14/20)
= 71/40-²⁾17/20
=71/40-34/40
=37/40
-
c)
= ( ⁴⁾18/5-⁵⁾6/4) - [( ⁵⁾9/2-²⁾12/5)-7/4]
= (72/20-30/20)- [(45/10-24/10)-7/4]
= 42/20- ( ²⁾21/10-⁵⁾7/4)
= 42/20 - (42/20-35/20)=
= 42/20- 7/20
= 36⁴⁾/20⁽⁴
=9/5
-
d)
= 23/6- {23/9 - [( ⁶⁾23/6-⁴⁾11/9)- 7/4)]}
= 23/6- { 23/9 - [( 138/36-44/36)- 7/4 )] }
= 23/6-[ 23/9 -(94/36-⁹⁾7/4)]
= 23/6 - [ 23/9- (94/36-63/36)]
= 23/6 - (⁴⁾23/9 - 58/36)
= 23/6-(92/36-58/36)
= ⁶⁾23/6- 56/36
=138/36-56/36
= 82⁽²/36⁽²
=41/18