Question

Решите уравнения:
А) x: 3/7=-5/21 ; x=
Б) х:(-5/9)=-18/7;х=
В)х:(-9/22)=-33/5;х=
Г)х:5/6=-24/25;х=

Answer 1

a) x=5/49
b) x=531/35

Answer 2

А) х ÷ 3/7 = -5/21
х = -5/21 × 3/7
х = -5/7 × 1/7
Х = -5/49

Б) х ÷ (-5/9) = -18/7
х = -18/7 × (-5/9)
х = -2/7 × (-5/1)
х = 10/7
х = 1 3/7

В) х ÷ (-9/22) = -33/5
х = -33/5 × (-9/22)
х = -3/5 × (-9/2)
х = 27/10
х = 2,7

Г) х ÷ 5/6 = -24/25
х = -24/25 × 5/6
х = -4/5 × 1/1
х = -4/5
х = -0,8