Question

А) (1-1/2):(1/2-1/3) б) (1/3+1/4):(2-5/6) в) (1/2+1/4-2/5):4/5помогите срочно надо

Answer 1

А)(2/2-1/2):(3/6-2/6)=1/2*6/1=3

Answer 2

А)

(1-1/2):(1/2-1/3) = (2/2-1/2):(3/6-2/6) = (1/2):(1/6)

To divide fractions, you need to invert the second fraction and multiply:

(1/2):(1/6) = (1/2) x (6/1) = 6/2 = 3

б)

(1/3+1/4):(2-5/6) = ((1/3 x 6) + (1/4 x 6)) : ((2 x 6) - 5) = (2 + 3/2) : (7/6)

To divide fractions, you need to invert the second fraction and multiply:

(2 + 3/2) : (7/6) = (2 + 3/2) x (6/7) = (12/7) + (9/7) = 21/7 = 3

в)

(1/2+1/4-2/5) : (4/5) = ((5/10 + 2/10 - 4/10) : (4/5)

Simplify the numerator:

(5/10 + 2/10 - 4/10) = 3/10

To divide fractions, you need to invert the second fraction and multiply:

(3/10) : (4/5) = (3/10) x (5/4) = 15/40 = 3/8