Question

Place parentheses in the expression so it simplifies to 30.5•7-3+2

Answer 1

As understand you need to get 30 by placing parenthesis in the expression:

• 5*7 - 3 + 2

There are two ways I can think of.

1) The 5*7 is 35 so we can subtract 5 to get 30:

• 5*7 - (3 + 2) = 35 - 5 = 30

2) Another way is 5*6 = 30 and it is achieved as:

• 5*(7 - 3 + 2) = 5*6 = 30

Answer 2

210.5.

Explanation:

To simplify the expression 30.5•7-3+2 and ensure that the order of operations is clear, we can place parentheses around the first two terms:

(30.5•7) - 3 + 2

Now, we can perform the multiplication first:

213.5 - 3 + 2

Then, we can simplify by performing the addition and subtraction:

210.5

Therefore, with the added parentheses, the expression simplifies to 210.5.