Answer:
X = 62
Step-by-step explanation:
The inside of a triangle is always equal to 180º therefore, you need to add everything up to equal 180. It should look like
(x + 1) + 55 + x = 180
Now you just solve.
Since there are 2 x's you can combine the like terms making them equal 2x
Now the equation should look like 2x + 1 + 55 = 180
Simplify the other like terms: 2x + 56 = 180
Now you want to get x by itself so you subtract 56 from both sides:
2x + 56 = 180
-56 -56
------------------------
2x = 124
Now to finish getting x by itself, divide both sides by 2.
2x = 124
----- ------
2 2
x = 62
FINALLY you plug in x to see if it worked.
(62 + 1) + 55 + 62 = 180
