Question

the value of x for which(2x+10) and (x+20) are supplementary angles​

Answer 1

Answer:

x=20

Step-by-step explanation:

ok up is the step by step method....

Answer 2

Answer:

(2x+10)+(x+20)= 180

2x+10+X+20=180

3x+30=180

x+30=180/3

x+30=60

x=60-30

x=30