7(8 times) =32 times
6x=24
x=4
A: Four years ago, my mother was seven times older than Mingming.
2. Solution: The well depth is x meters.
3(x+4)=6(x+ 1)
3x+ 12=6x+6
3x=6
x=2
6(x+ 1)= 18m
Answer: The well depth is 2m and the rope length is 18m.