B=-3
because you divide 27 by -9 to get y by its self
When you divide two fractions, you're actually multiplying one of them by the reciprocal of the other. First, find the reciprocal of the second fraction by flipping it upside down. Then, multiply it by the first fraction. (Numerator x numerator and denominator x denominator)

÷

Replace the second fraction with it's reciprocal

x

Multiply (-7 x 3 and 12 x 2)

Both 21 and 24 are divisible by three, so divide them by 3
I believe that the answer is B and D
Answer:
2370 cm²
Step-by-step explanation:
2(32·15+15·15+15·32) = 2370
82 tens in the same thing as 820 because if you multiply 82 by 10 you get 820