Реши уравнения: 48:z+879 = 887 974-b:7= 869 y: 2-275 = 145

Решение:

1. 48:z + 879 = 887
   \( 48:z = 887 - 879 \)
   \( 48:z = 8 \)
   \( z = 48 : 8 \)
   \( z = 6 \)
2. 974 - b:7 = 869
   \( b:7 = 974 - 869 \)
   \( b:7 = 105 \)
   \( b = 105 \times 7 \)
   \( b = 735 \)
3. y:2 - 275 = 145
   \( y:2 = 145 + 275 \)
   \( y:2 = 420 \)
   \( y = 420 \times 2 \)
   \( y = 840 \)

Ответ: z = 6, b = 735, y = 840.