Word Solving Equation 2

[Guest]

Mary is y years old. Her father is 4 times older than Mary. Her mother is 7 years younger than her father. if the three ages add up to 101 years, find the value of y.
Find the ages of Mary's parents.

Thanks in advance!

 

[Gene]

M=y
F=4M=4y
m=F-7=4y-7
M+F+m=101 or
y+4y+(4y-7)=101
Solve for y