Answer:
The answer is 40
Step-by-step explanation:
55-15=40
The number is 18
hope this helps
When solving these proportions we just remember when moving a number from one side to the other if it started in the numerator it ends up in the denominator and vice versa.
I'll do it in two steps here for teaching purposes; it's not too hard to go directly to the answer.



Answer:
y=-3x+3/2
Step-by-step explanation:
move 6x to the other side
2y=-6x+3
then divide y
y=-3x+3/2