Question

В про­грам­ме «:=» обо­зна­ча­ет опе­ра­тор при­сва­и­ва­ния, знаки «+», «-», «*» и «/» — со­от­вет­ствен­но опе­ра­ции сло­же­ния, вы­чи­та­ния, умно­же­ния и де­ле­ния. Пра­ви­ла вы­пол­не­ния опе­ра­ций и по­ря­док дей­ствий со­от­вет­ству­ют пра­ви­лам ариф­ме­ти­ки. Опре­де­ли­те зна­че­ние пе­ре­мен­ной b после вы­пол­не­ния ал­го­рит­ма:а := 7b := 2а := b*4 + a*3b := 30 - aВ от­ве­те ука­жи­те одно целое число — зна­че­ние пе­ре­мен­ной b.

Answer 1

A:=7
b:=2

a:=b * 4 + a * 3
a:=2 * 4 + 7 * 3
a:=29

b:=30 - a
b:=30 - 29
b:=1

Answer 2

Explanation

The given algorithm involves a series of assignments and arithmetic operations. We need to determine the value of the variable `b` after executing the algorithm.

Let's break down the algorithm step by step:

1. `a := 7`: This assigns the value 7 to the variable `a`. 2. `b := 2a`: This assigns the value of `2a` to the variable `b`. Since `a` is currently 7, `2a` would be 14. 3. `a := b*4 + a*3`: This assigns the value of `b*4 + a*3` to the variable `a`. At this point, `b` is 14 and `a` is 7. So, `b*4 + a*3` would be `14*4 + 7*3 = 56 + 21 = 77`. 4. `b := 30 - a`: This assigns the value of `30 - a` to the variable `b`. At this point, `a` is 77. So, `30 - a` would be `30 - 77 = -47`.

Therefore, the value of the variable `b` after executing the algorithm is -47.

Calculation Steps

Here are the calculation steps for each assignment:

1. `a := 7` - `a = 7`

2. `b := 2a` - `b = 2 * 7 = 14`

3. `a := b*4 + a*3` - `a = 14 * 4 + 7 * 3 = 56 + 21 = 77`

4. `b := 30 - a` - `b = 30 - 77 = -47`

Therefore, the value of the variable `b` after executing the algorithm is -47.

[[1]]