Answer:
a
Step-by-step explanation:
Answer: The second one
Step-by-step explanation:
Answer:
5x=15. I hope it can help you a lots. thanks.
Step-by-step explanation:
5x=14+1
5×=14.
Answer:
x = 20
Step-by-step explanation:
The 3 angles lie on a straight line and sum to 180° , that is
3x + 80 + 2x = 180
5x + 80 = 180 ( subtract 80 from both sides )
5x = 100 ( divide both sides by 5 )
x = 20