Question

Find the value of x.

Answer 1

X = 60

Explanation:

All angles in a triangle have to add up to 180 degrees. Therefore we can set up an equation like this:

`40 + (x + 20) + x = 180`

Now, all we have to do is solve:

`Combine:\\60 + 2x = 180\\Minus:\\2x = 120\\Divide:\\x = 60`

Therefore, x is equal to 60.

We can check this by plugging x into the angles and adding all of them up :

40 + (60 + 20) + 60 = 180

40 + 80 + 60 = 180

120 + 60 = 180

180 = 180

I hope this helps!!

If you have any questions let me know!

- Kay :)

Answer 2

x=15

Explanation: