Question

Solve for x in the diagram below

Answer 1

x = 20°

Explanation:

We know that the big angle is 90°, due to the marking on the diagram. So, we make all the angles add up to 90°. Now, we can make the x stay on one side and solve for the value.

Answer 2

x= 20 degrees

Explanation:

We know the sum of the three angles adds to 90 (because of the box in the corner)

x + 2x + x+10 = 90

Combine like terms

4x +10 = 90

Subtract 10 from each side

4x+10-10 = 90-10

4x = 80

Divide each side by 4

4x/4= 80/4

x = 20