Question

Find the value of x.

Answer 1

X=39

Explanation:

add all the sides of the traingle

X+X+10+3X-5=180

collect like terms

X+X+3X-5+10=180

5x-15=180

5x=180+15

5x=195

divide both sides by 5

5x÷5=195÷5

X= 39