Выполните действие: ( 2 1/2-6 3/4): 1/4

Question

Выполните действие: ( 2 1/2-6 3/4): 1/4

Answer 1

( 2 1/2-6 3/4): 1/4 = 21/-4 * 3/4 : 1/4 = -21/4+3/4= -21+3/4 = -18/4
-18/4:1/4= - 18/4*4/1 = - 18*4/4*1= - 72/4 = -18/1 = -18

Answer 2

(2 1/2- 6 3/4)÷1/4= -17
1)2 1/2=(2×2+1)/2=5/2=2×5/2×2=10/4
2)6 3/4=(6×4+3)/4=27/4
3)10/4-27/4=(10-27)/4= -17/4
4) -17/4÷1/4=-17×4/4×1= -17/1= -17