Question 1133070
u = units digit
t = tens digit


u/t = 1/2.
t = u + 2


therefore, u/t = 1/2 becomes u/(u+2) = 1/2
multiply both sides of the equation by (u+2) to get:
u = 1/2 * (u + 2)
simplify to get:
u = 1/2 * u + 1
subtract 1/2 * u from both sides to get:
u - 1/2 * u = 1
combine like terms to get:
1/2 * u = 1
solve for u to get:
u = 2


t = u + 2 becomes t = 2 + 2 which becomes t = 4


you have t = 4 and u = 2
u/t = 1/2 becomes 2/4 = 1/2 which is true.
t = u + 2 becomes t = 2 + 2 which becomes t = 4 which is true.


solution looks good.
solution is that the tens digit is equal to 4 and the ones digit is equal to 2.
the number is 42.