(x, y) = (20, 449)
when the equations are in this form, it is easiest to substitute one of the expressions for y into the other equation. that gives
21.95x +10 = 22.45x
10 = 0.50x . . . subtract 21.95x
20 = x . . . . .multiply by 2
y = 22.45x = 22.45·20 = 449
x = 40
a right angle measures 90 degrees, so the part labeled 2x measures 90-10 = 80 degrees. if 2x is 80 degrees, x must be 40 degrees.