Step-by-step explanation:
3y means 3 times y. It is normally used to shorten an equation with a variable to save room. The number is always placed before the variable.
Answer:
45
Step-by-step explanation:
<ABY=<ZBY(VERTICAL ANGLES)
SO.
3x-5=2x+40
3x-2x=40+5
x=45
Answer:
39
Step-by-step explanation:
78/2 = 39