What is the answer to 2/5x+3/7=1-4/7x

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

What is a correct first step in solving the inequality-4(3-5x)> -6x+9