I need help now!
Solve the equation 2 3 x -1 5 x = x - 1.

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9

Asmall book publisher knows that 26 books weigh 41 lbs. how much do 40 books weigh?