Find the solution of this system of equations
4x - 5y = -12
-X + 5y = 18
1 answer:
4x - 5y = -12
-x + 5y = 18
Add the equations together:
4x + -x = 3x
-5y + 5y = 0
-12 + 18 = 6
So now you have:
3x = 6
Divide both sides by 3:
X = 2
Now you have the value of x, replace x with 2 in one of the equations and solve for y:
4(2) -5y = -12
8 -5y = -12
Subtract 8 from both sides:
-5y = -20
Divide both sides by -5:
Y = 4
The solution is x = 2 and y = 4 which is written as (2,4)
You might be interested in
Answer:
Caleb keeps 65% of his mask collection on the wall.
4x + 5y = -2
-5 -5
4x = -5y - 2
4x/4 = -5y -2/ 4
x = -5/4 y + -1/2
Slope is given by the expression:
We can equal both slopes of mAC and mCE
Answer is B.
They had 81 chairs at the beginning
The answer is 7.5 or 15/2
