Take all the variables and put them next to each other but still in order.
Keep their negatives and positives.
6x-2x-9x 5y+3y
Do the math with the variables that way, and you'll get an answer of
-5x 8y
Reform them into the simplified equation, so you'll end up with an equation of
-5x+8y
The x would be before the y since that's how it is in the alphabet. That would be a simplified form of the equation.
Use the FOIL method
First 4x × -2x = -8x^2
Outside 4x × -5 = -20x
Inside 3 × -2x = -6x
Last 3 × -5 = -15
-8x^2 - 20x - 6x -15 =
Combine like terms
-8x^2 -26x -15
The answer is:
X=20
This is because 20-7=13 and makes a true statement
Hope this helps have a good day! :)
Answer:
Well elimination is basically multiplying a number to make it possible for it to cancel out
We can multiply the first equation by 2
2(x+2y=-1)
This would be
2x+4y=-2
Its still the same thing but just with non simplified numbers
We can now do any method really to solve
I will just do the subtraction method
2x+4y=-2
-2x+y=4
Solve
2x-2x=0
4y-y= 3y
-2-4= -6
3y= -6
Now solve
y=-2
To find x subsitute in “y” and find ”x”.
x+2*-2=-1
x-4=-1
x=3
y= -2
x= 3
