Solve for y by setting one equation =to X after that you can substitute the equation into the other one let's set the first one in X= FORM
X-7y=10
-2x+14y=-20
Add 7y to both sides of the first equation to let x stand alone
X=7y+10
Now you can substitute x on the second equation
-2 (7y+10)+14y=-20
Distribute
-14y-20+14y=-20
Add and simplify
Us cancel out =0
-20=-20
0=0
They are the same equations you can also divide the second equation by -2 which would make it look like this
X-7y=10
-2 (x-7y=10)
Let me know if I have answered your question
Answer:
The correct answer is 8
Step-by-step explanation:
It’s 8, because 5- (-3) is like saying 5+ 3, because in math when your dealing with negatives, 2 negitives means the answer is positive and 1 negative means the answer is negative. Hope this helps! :)
This is the correct form of a supplementary angle.
