Question

Котороя сверху помогите пж

Answer 1

1) 72/80 - (x - 12/80) = 15/80

72/80 - x + 12/80 = 15/80

84/80 - x = 15/80

- x = 15/80 - 84/80

x = 69/80

2) 116/12 overline 125 - (41/125 - x) = 94/125

116/125 - 41/125 + x = 94/125

75/125 + x = 94/125

x = 94/125 75/125 = 19125

3) 4/40 + y + 16/40 = 31/49 + 6/40

20/40 + y = 31/49 + 6/40

y = 31/49 + 6/40 - 20/40 = 31/49 - 14/40

4) 60/90 - 6/90 - x = 29/90

54/90 - x = 29/90

- x = - 25/90 = 25/90 = 5/18