Hello, peachgal!

Here's the set-up for #2 . . .

Let .

2. The sum of the digits of a-3 digit number is 18: . . . . . . . .

Three times the tens digit minus 5 times the units digit is 17:. .

4 times the units digit plus twice the hundreds digit is 22: . . . .

Find the 3-digit number.

Now solve the system of equations . . .