Answer:
v = 13
Step-by-step explanation:
because they are supplementary angles they add up to 180
so
add them
and put them equal to 180
9v + 3 + 60 = 180
combine like terms
9v + 63 = 180
now subtract 63 to both sides
9v = 117
divide 9 to both sides
v = 13
that is your answer
