The first step for solving this expression is to divide 21 by 7.
3 + 20 × 100 × 2 - 3
Eliminate the opposites in the expression.
20 × 100 × 2
Multiply 20 by 100.
2000 × 2
Lastly,, multiply the two numbers together to get your final answer.
4000
Let me know if you have any further questions.
:)