Solve with variable on both side explain how u solved?
5x+9-4x=15-2x

What is sin 7x/4 ? i need on this urgent trig

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.