Question

(643×7-2783)×2+4977÷9

Answer 1

Ответ:

643*7=4501

4501-2783=1718

1718*2=3436

4977:9=553

3436+553=3989

Answer 2

(643×7-2783)×2+4977÷9=(4501-2783)×2+553=1718×2+553=3436+553=3989

Answer 3

To calculate the expression (643×7-2783)×2+4977÷9, follow the order of operations (also known as PEMDAS/BODMAS) which stands for Parentheses/Brackets, Exponents/Orders, Multiplication/Division (from left to right), and Addition/Subtraction (from left to right).

Let's break down the expression step by step:

1. Calculate the value inside the parentheses first: (643×7-2783) Multiply 643 by 7: 4501 Subtract 2783 from 4501: 1718

2. Multiply the result from step 1 by 2: 1718 × 2 = 3436

3. Calculate the division: 4977 ÷ 9 = 553

4. Add the result from step 3 to the result from step 2: 3436 + 553 = 3989

Therefore, (643×7-2783)×2+4977÷9 is equal to 3989.