Question

What is the value of x?

Answer 1

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So, we know that a right angle is 90 degrees, and we know that it is divided in two parts. So, we must set up the equation knowing the angles.
3x + 60 = 90.
So, we need to begin simplifying the equation until we have isolated the variable. We can start by subtracting 60 from 90 to get rid of the 60 on the left side of the equation. 
90 - 60 = 30. 
So, our simplified version is:
3x = 30.
So, we need to isolate the variable. To do that, we must divide both sides by 3.
3x/3 = 1x = x.
So, we have :
X = 30/3.
Simplify 30/3.
30/3 = 10.
So:
X = 10

Answer 2

10 because a right angle = 90 degrees. and 90 - 60 = 30. 30 / 3 =10