I don't understand how to get the answer
I don't understand how to get the answer
Jennifer,
Think of the y's as apples and the 18 as oranges. Just add up each kind of fruit:
-5y+4y-1y = -2y
-18 = -18
so the answer is -2y -18
or in terms of fruit: -2 apples and -18 oranges ( and yes minus fruit is an abstract concept)
Now I suspect the problem may actually have been stated as:
-5y+4y-18-y = 0 (check the source of the problem). This is solved as follows:
-5y+4y-18-y = 0
-2y -18 = 0
add +18 to each side and get:
-2y = +18
Divide both sides by -2 to get:
y = +18 / (-2)
or y= -9
Does that help? Good Luck, BruceS