Question 611205
Let x = larger number
Let y = smaller number

x - y = 1
3y + x = 29

To solve:
x - y = 1
x = y + 1
Substitute:
3y + x = 29
3y + y + 1 = 29
4y + 1 = 29
4y = 28
y = 7

x = 8