Cecilia simplified an expression. Her work is shown below. (63+23) – 1.5*(4,5 – 0,5
04-15x(4.5-0.5)
Step 1
775x(45-05)
Step 2
Step 3
Step 4
775x9
69.75
Where did Cecilia make her first mistake?
step
step 2
Step 3
Step 4

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.