We start with:
y=2x-15
y=5x
Now, we have a perfectly set-up variable we can get rid of: <em>y.</em>
But we need to make either the top or bottom equation negative, so for simplicity, let's make the bottom one negative.
y=2x-15
(-y)=(-5x)
Now simplify.
-3x-15=0
Add 3x on both sides.
3x=15
Divide by 3 on both sides.
x=5
Answer:
3 x 15
Step-by-step explanation:
aren't you trying to figure out what the expression is simplified?
1/4 is the correct answer
Start point A = (-4, 1) over y, A = (4,1) over x, A = (4, -1) rotated 180 degrees.
The subtraction theorem states that for all real numbers,

and

,

.
(To subtract, we can add the inverse.)
Thus, we can have the these two equivalent expressions.