Question

What is the value for x?

Answer 1

x = 9

Explanation:

All 3 sides of the triangle are congruent making it an equilateral triangle with all 3 angles being congruent.

Each angle is therefore 180° ÷ 3 = 60°

Hence

7x - 3 = 60 ( add 3 to both sides )

7x = 63 ( divide both sides by 7 )

x = 9

Answer 2

x=9

y=5

EXPLANATION

The y triangle is an equilateral triangle.

Each measure of an equilateral triangle is 60°

This implies that:

(7x-3)°=60°

Add 3 to both sides

7x=60+3

7x =63

Divide both sides by 7

`x = (63)/(7)`

`x = 9`

Also,

11y+5=60°

Subtract 5: from both sides of the equation

11y=60-5

11y=55

Divide both sides by 11

y=5