Answer:
159cm
Step-by-step explanation:
Sum of all sides of triangles is 180
so, 15+6=21
then 180-21=159
Answer: Your answer is D
Step-by-step explanation: pls mark me as brainiest and 7 x 3 = 21 or 21 / 3 = 7
Answer:
40 + x = y
Just use the variables given to make an equation.
