Answer:
26
Explanation:
The ones digit is x. The tens digit is y.
"the sum of the digits in a two-digit number is 8"
x + y = 8
"The value of the number is 4 less than 5 times the ones digits.find the number."
10y + x = 5x - 4
Solve x + y = 8 for y:
y = 8 - x
Substitute in the second equation:
10(8 - x) + x = 5x - 4
80 - 10x + x = 5x - 4
-14x = -84
x = 6
x + y = 8
6 + y = 8
y = 2
The number is 26.