Question

If (8 +7)r=30,then 15r= 30

Answer 1

Answer: Substitution (=)

Explanation:

I named the property for you.

Answer 2

Answer: R = 2

Step-by-step explanation: If (8 + 7)r = 30, then 15r = 30.

To solve for r, we can divide both sides of the equation by 15.

15r = 30

r = 30 / 15

r = 2

Therefore, the value of r is 2.

We can check our answer by substituting 2 back into the original equation:

(8 + 7)(2) = 30

15(2) = 30

30 = 30

Both sides of the equation are equal, so our answer is correct.

I hope this helps!