Question

-21 + 84 : 5 =​

Answer 1

-21 + 84 : 5 =- 21 + 16,8 =-4,2

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Answer 2

-21 + 84 ÷ 5 = -4,2.

1) 84 ÷ 5 = 16,8.

2) -21 + 16,8 = - ( 21 - 16,8 ) = -4,2.

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Answer 3

To solve the expression, follow the order of operations (PEMDAS/BODMAS):

1. Parentheses/Brackets
2. Exponents/Orders
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)

Let's apply this to the expression:

-21 + 84 ÷ 5 =

First, perform the division:

-21 + (84 ÷ 5) = -21 + 16.8 =

Now, perform the addition:

-21 + 16.8 = -4.2

So, -21 + 84 ÷ 5 equals -4.2.