answer
Explanation:
they two are in a straight line so
it can be added
or, 3x+2+6x-20=180[straight angle]
or, 9x-18=180
or, 9x=180+18
or, 9x=198
or, x=198÷9
or, x=22
the value of x is 22
8.5m questions
11.2m answers