Answer:
y = 136
x=15
Explanation:
to work this question out you must know the angles on a straight line add up to 180 degrees. By doing that we can find the top angle inside of the triangle.
180 - 104 = 76
to find x we need to know that angles in a triangle add up to 180 degrees.
180 = (3x-1) + 4x + 76
To solve for x, we can first simplify the equation.
180 = (3x-1) + 4x + 76
This can be re-arranged as:
(3x-1) + 4x = 104
and then combined as:
7x = 105
Finally, we can solve for x by dividing both sides by 7:
x = 105/7
x = 15
So the value of x that satisfies the equation is 15
to find y we need to know that angles on a line equal 180
180 = (3(15)-1) + y
180 = 44 + y
To find the value of y, we can subtract 44 from both sides
y = 180-44
y = 136