Question

If one side of a triangle is 3 X + 4 and other side is 4 x + 5 and the last side is X + 11 then what is the value of x

Answer 1

Answer:

3 sides of a triangle = 180°

3x+4+4x+5+x+11=180°

8x+20=180°

8x=180-20

8x=160

x=160/8

x=20

3x+4=

3x20+4=64°

4x+5=

4x20+5=85°

x+11=

20+11=31°