Question

a triangle has the angles ( x+10), (x+5) and x. i need to solve for x, i have no idea how to get the answer please help.

Answer 1

x= 33

Explanation:

Since the sum of all 3 angles in a triangle is 180°,

(x +10)° +(x +5)° +x°= 180° (∠ sum of ∆)

Simplify:

3x +15= 180

-15 on both sides:

3x= 180 -15

3x= 165

Divide both sides by 3:

x= 165 ÷5

x= 33