Question

If the measures of three angles in a triangle are (2x+15)º, (10x – 20)º, and (3x + 2)º, then find the value of 15x – 3. I am getting 180. Is it right ?

Answer 1

The sum of all the internal angles of a triangle = 180*

Answer 2

(2x+10)+10x-20)+(3x+2)=180
15x-3=180
15x=183
x=183/15=12.2
x=12.2
(15x-3)=15(12.2)-3=180

Answer 3

Is it right

Answer 4

I guess you did a mistake?
2x+15

Answer 5

Please can you check it

Answer 6

it's 2x+15!

Answer 7

I got 15x -3 = 180

Answer 8

I wrote wrong here.
but I put the correct numbers

Answer 9

yes I got the same

Answer 10

2x + 15 + 10x – 20 + 3x + 2 = 180

Answer 11

x = 12.2 is right!

Answer 12

My textbook saying 90 as a answer