Question

Найдите значение выражения : 1)(b+5/6)-3/4, если b =11/122) (1/5+d)-9/20, если d=13/16.Пожалуйста с объяснением

Answer 1

Б+5/6-3/4=б+10/12-9/12=б+1/12=11/12+1/12=12/12=1
1/5+д-9/20=4/20+д-9/20=-1/4+13/16=-4/16+13/16=9/16

Answer 2

Calculating the Expressions

To find the value of the given expressions, we'll substitute the values of b and d into the expressions and then perform the calculations.

1. For the expression (b + 5/6) - 3/4, where b = 11/12: - Substituting b = 11/12, the expression becomes: (11/12 + 5/6) - 3/4 - Now, we'll perform the addition and subtraction to find the value of the expression.

2. For the expression (1/5 + d) - 9/20, where d = 13/16: - Substituting d = 13/16, the expression becomes: (1/5 + 13/16) - 9/20 - Again, we'll perform the addition and subtraction to find the value of the expression.

Let's calculate the values of these expressions.

Calculation

1. For the expression (b + 5/6) - 3/4, where b = 11/12: - Substituting b = 11/12, the expression becomes: (11/12 + 5/6) - 3/4 - Calculating the addition and subtraction: (11/12 + 10/12) - 3/4 = (21/12) - 3/4 = 7/4 - 3/4 = 4/4 = 1

2. For the expression (1/5 + d) - 9/20, where d = 13/16: - Substituting d = 13/16, the expression becomes: (1/5 + 13/16) - 9/20 - Calculating the addition and subtraction: (16/80 + 65/80) - 36/80 = (81/80) - 36/80 = 45/80 = 9/16

Conclusion

The value of the expression (b + 5/6) - 3/4, when b = 11/12, is 1. The value of the expression (1/5 + d) - 9/20, when d = 13/16, is 9/16.