Answer:
B
Step-by-step explanation:
3x - 16 has a supplement. That supplement is = to 6x + 7 because corresponding angles on the same side of the transversal are equal.
Supplement
180 - (3x - 16) = supplement Remove the brackets
180 - 3x + 16 = supplement Combine like terms
196 - 3x = supplement.
Equation
6x + 7 = 196 - 3x Add 3x to both sides
Solution
6x + 3x + 7 = 196 Combine
9x + 7 = 196 Subtract 7 from both sides
9x = 196 - 7
9x = 189 Divide by 9
x = 189/9
x = 21
