What is the value of the variable in the equation? b + 0.9 = 5.1 answers 1. -6 2. -4.2 3. 4.2 4. 6

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Explain how you divide powers with like bases.discuss why the bases have to be the same.how are these rules similar to the rules for multiplying powers with like bases.

Can someone explain to me how to do