Help! Identify the solution or how many solutions there are to the system

The sum of two numbers is 0. twice the smaller number subtracted from 3 times the larger number is 10. let x represent the larger number and y represent the smaller number. what is the equation

If a=0.333333 and b=0.55555, what is the value of a+b

Solve the equation for y. -1 = 1/3y + 11. will give 5 stars if answered correctly!