Question

What is the value of x? to Enter your answer in the box. X=?

Answer 1

Answer:

21

Step-by-step explanation:

We need to utilise one important angle in order to answer this question which is

→ Angles in a triangle add up to 180°

Using this information we can set up an equation to find the value of x

⇒ Form equation using the important angle fact

→ x - 4 + 3x + 100 = 180

⇒ Simplify the 'x' and the numerical terms

→ 4x + 96 = 180

⇒ Minus 96 from both sides to isolate 4x

→ 4x = 84

⇒ Divide both sides by 4 to isolate x

→ x = 21

The value of x is 21