What are the number or what is the equation.What amount of dollars
Answer:
3
Step-by-step explanation:

a = 3

multiply 2 and 3
2 * 3 = 6

simplify
18/6 = 3
42 because x is equal to its corresponding side
Answer:
a=15x; b=8x; c=13x
180°=a+b+c=15x+8x+13x=36x
=> x=180÷36=5
=> a=15×5=75°; b=8×5=40°; c=13×5=65°