Question

Calculați !!!Vă rog rezolvarea completă !!! Repede

Answer 1

Rezolvarea este în fotografie
Unde nu înțelegi să îmi spui

Answer 2

a)  1/8 + 4/8 = 5/8
b)  1/6 + 1/6 : 1/3 = 1/6 + 3/6 = 4/6= 2/3
c)   4/9 + 3/10 : 6/10 = 4/9 + 3/10 × 10/6 = 4/9 + 1/2 = 8/18 + 9/18 =27/18 =
= 9/6 = 3/2= 1 intreg si 1/2 = 1/5
d) 4/3 × 5/2 + 6 = 10/3 + 18/3 = 28/3 = 9 intregi si 1/3
e)  15/7 × 6/5 - 1/21 × 3 = 18/7 - 1/7 = 11/7 = 1 intreg si 4/7
f)  5/6 : ( 1/3 + 1/2 × 3/1) = 5/6 : ( 1/3 + 3/2) = 5/6 :  ( 2/6 + 9/6)= 5/6 : 11/6=
 = 5/6 × 6/11 = 5/11
g) ( 1/15 + 1/21 + 1/ 20) : 23/21=
cmmmc al numerelor ( 15, 21, 20) = 2²×3×5×7=420
=( 28/420 + 20/420 + 21/420) : 23/21=
=69/420 : 23/21 =
= 69/420 ×21/23=
=3/20

h) [ 1/11 + 1/11 : ( 11/11 - 5/11)] : 17/18=
=( 1/11 + 1/11 ×11/6) ×18/17=
=( 6/66 + 11/66) ×18/17=
= 17/66 ×18/17 =
= 3/11

i)  = 5/3 + 1/3³= 45/27 + 1/27 = 46/27 =1 intreg si 19/27