Question

A)-2/9+3-2 1/6
B)1/5-(1-3/10)+1/2
C)-3/4-(3-8+5/6-11/12)
D)2/9-(2/3+1/6)-1 1/3

Answer 1

Respuesta:

A)-2/9+3-2 1/6

=(−2)+(3⋅9)9−7⋅32⋅3=

=259−72=

=(25⋅2)−(7⋅9)9⋅2=

=−13⁄18

B)1/5-(1-3/10)+1/2

=15−(10−310)+12=  

=15−(710)+12=

=2−75⋅2+12=

=−12+12=

=(−1)+12=

=0

C)-3/4-(3-8+5/6-11/12)

=−34−(−5+56−1112)=  

=−34−((−5⋅6)+56−1112)=

=−34−(−256−1112)=

=−34−((−25⋅2)−116⋅2)=

=−34−(−6112)=

=(−3⋅3)−(−61)4⋅3=

=13⁄3

D)2/9-(2/3+1/6)-1 1/3

=29−((2⋅2)+13⋅2)−113=  

=29−(56)−113=

=(2⋅2)−(5⋅3)3⋅(3⋅2)−113=

=−1118−113=

=(−11)−(11⋅6)6⋅3=

=−77⁄18