By taking the height of the dad and mom 6²3/8 minus 5²5/8
We can separate the 6² and 5², which will give us 1² then look at the 3/8 minus the 5/8, this equals 2/8, which is 1/4. So the difference is 1²1/4
19 because 1 ten = 10 ones and 9 one plus 10 ones equals 19 altogether
3.5z=2.25z-4.25+6.25
1.25z=2
z=1.6. As a result, this equation have one solution. Hope it help!