Answer:
equation A
Step-by-step explanation:
To know what equation is correct, we can calculate the left part of each one, and checking if the value matches the right part (which is always 30)
(Remember: to calculate equations, we first solve operations inside parenthesis, then divisions and multiplications, and for last sums and subtractions)
So, in option A, we have in the left part:
(5 + 70) ÷ 5 × 2 -> 75 ÷ 5 × 2 -> 15 × 2 -> 30
This option is correct, as the left part matches the right part.
Checking the other options, we have for option B:
5 + 70 ÷ 5 × 2 -> 5 + 14 × 2 -> 5 + 28 -> 33
It does not match the left part. For option C:
5 + (70 ÷ 5) × 2 -> 5 + 14 × 2 -> 5 + 28 -> 33
It does not match the left part. For option D:
5 + 70 ÷ (5 × 2) -> 5 + 70 ÷ 10 -> 5 + 7 -> 12
It does not match the left part. So, the correct answer is equation A
