The multiplicative inverse of 1 is in fact 1/1 which is equal to 1. So 1 is actually its own multiplicative inverse.
In this problem why is the easiest to substitute.
Just set the equations equal to each other because they both equal y
-x + 4 = 2x - 8
(You want to get all the x's to one side so add x to each side)
4 = 3x - 8
(next add 8 to both sides)
12 = 3x
(lastly divide 3 from both sides)
4 = x
You have got your x so now it is time to find that y just replace x to either of the two equations
y = 2(4) -8 or y = -(4) + 4
y = 8 - 8 y = 0
y = 0
Final Answer: y=0, x=4
It may be misleading because it only tells you those two years, not what happened between those years
Answer:
1:9
Step-by-step explanation:
a=4 and b=36
4:36
Simplify it by dividing by 9
1:9
(it could also be 9 depending on what is a and b)