Question

Расставь скобки так, чтобы были верными 3+5•4-2 =30 3+5•4-2 =13. 5-4•1=1 5+4•1 =9

Answer 1

Вот я решил ваш ответ

Answer 2

(3+5)•4-2=30

3+5•(4-2)=13

(5-4)•1=1

5+(4•1)=9

Answer 3

To make the expressions true, you need to consider the order of operations (PEMDAS/BODMAS) which stands for Parentheses/Brackets, Exponents/Orders, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

Let's go through each expression one by one:

1. 3 + 5 * 4 - 2 = 30: To get 30, you need to add parentheses to force the multiplication to be performed before the addition and subtraction:

Corrected: (3 + 5) * 4 - 2 = 30

2. 3 + 5 * 4 - 2 = 13: To get 13, you need to add parentheses to force the addition to be performed before the multiplication and subtraction:

Corrected: 3 + (5 * 4) - 2 = 13

3. 5 - 4 * 1 = 1: This expression is already correct, as there's no need for parentheses. Multiplication is performed before subtraction.

4. 5 + 4 * 1 = 9: This expression is also already correct, as there's no need for parentheses. Multiplication is performed before addition.

So, the corrected expressions are:

1. (3 + 5) * 4 - 2 = 30
2. 3 + (5 * 4) - 2 = 13
3. 5 - 4 * 1 = 1
4. 5 + 4 * 1 = 9