What is 2(×-2)+3(×+5) simplifies

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.

Complete the input-output table for the linear function y = 3x. complete the input-output table for the linear function y = 3x. a = b = c =

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?