Can someone buy me a gift card plz for Nintendo switch it will be the word to ME

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

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.