find the value of x
*please helpp

This triangle is a right triangle.
We know that the sum of the angles is 180°.
So:
90° + (x+23)°+ (x+13)° = 180°
90 + (x+23) + (x+13) = 180
(x+23)+(x+13) = 180-90
(2x+36) = 90
(2x) = 90-36
(2x) = 54
x = (54/2)
x = 27
=> x = 27