An owl eats 3 mice. Prior to being eaten, the 3 mice jointly consumed a small block of cheese containing 60 kJ of
energy. How many kilojoules of energy from the block of cheese did the owl obtain after consuming the 3 mice?

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm