Answer:
y=9x-45
Step-by-step explanation:
Given:
We are given an equation of x and y. We need to solve for y.
It means to isolate variable y. We have to move all variable and constant right side and leave y at left side.
Subtract 9x both sides (Subtraction property of equality)
cancel like term
Divide each side by -1 (Division property of equality)
Hence, The equation solve for y=9x-45
Answer:
(3,-1)
Step-by-step explanation:
So we have the system of equations:
As directed, add straight down. The y-variable will cancel:
Now, divide both sides by 5. The left cancels:
So x is 3.
Now, substitute 3 for x in either of the equations:
Substitute 3 for x:
Multiply:
Subtract 9 from both sides:
So, our answer is: x=3, y=-1 or (3,-1).
And we are done :)