Question

Как поставить скобки правильно в выражение 15+36:99-3=21 помогите плиз

Answer 1

15+(36:99)-3 , вот так , незачто

Answer 2

(15+36):(99-3)=21 Алалпаллп

Answer 3

Setting Parentheses in the Expression 15 * 36 / 99 - 3 = 21

To correctly place parentheses in the expression 15 * 36 / 99 - 3 = 21, we need to follow the order of operations in mathematics, which is often remembered using the acronym PEMDAS:

1. Parentheses: First, we evaluate expressions within parentheses. 2. Exponents: Next, we solve any exponents or roots. 3. Multiplication and Division: Then, we perform multiplication and division from left to right. 4. Addition and Subtraction: Finally, we do addition and subtraction from left to right.

Let's break down the expression step by step and place the parentheses accordingly:

1. 15 * 36 / 99 - 3 = 21 - First, we perform the multiplication and division from left to right: - 15 * 36 = 540 - 540 / 99 = 5.4545... - Then, we subtract 3 from the result: - 5.4545... - 3 = 2.4545...

So, the expression without parentheses evaluates to approximately 2.4545..., not 21.

To make the expression equal to 21, we need to place parentheses in a way that changes the order of operations. However, it's not possible to place the parentheses in a way that would make the expression equal to 21 without changing the numbers or the operators in the expression. Therefore, the original expression 15 * 36 / 99 - 3 = 21 is not solvable to equal 21 without altering the expression itself.

If you have a specific intended expression or if there's a different expression you'd like to solve, please provide the exact expression, and I can assist further!