Answer:
Step-by-step explanation:
y = 
for y = 1
x = 35
for y = 2
x = 70
and so on
substituting the values in y =
will also give same result!
All the angles in a triangle equal 180 degrees so 128 + (5x+10) + 9x = 180
Group the like values to get 138 + 14x = 180
Subtract 138 from 180 to get 14x = 42
Divide 42 by 14 to get x = 3
Therefore x = 3
Answer:

Step-by-step explanation:
