Try to do the answer of -4
Answer:
you do the opposite for example: If its x+9=11...You subtract 9 from 11.....if its x-9=11....you do add the 9 to the 11
Step-by-step explanation:
You have to do 91/13 which is 7 which means that each hen lays 7 eggs per week so the unit rate is 7
Let’s make an equation
Let’s say x = amount of years after
Smith = 8, mother = 42
3(8 + x) = 42 + x
24 + 3x = 42 + x
2x = 18, x = 9
Solution: after 9 years