Question

Find the value of x in the following diagrams .

Answer 1

In first ,
3x+x+40=180
4x+40=180
4x=180-40
4x=140
x=140/4
x=35


In second ,
2x+10+3x-10+40=180
5x+10-10+40=180
5x+40=180
5x=180-40
5x=140
x=140/5= 28

Answer 2

Here is your answer of (ii) .