3 questions. Please help. 1- What is 4/5-1/5=? In simplest form . Explain.

2-11/20-7/20=? In simplest form. Explain.

3-9/16-7/16=? In simplest form .Explain.

Tamera puts 15/4 gallons of gasoline in her car. which mixed number represents the gallons of gasoline? a) 2 3/4 gallons b) 3 1/4 gallons c) 3 3/4 gallons d) 4 1/2 gallons answer it's worth a lot of points!

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

What is the rate for one gallon of gasoline