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
IS the answer ii and iv
and the other is y<5.3
Answer:
10+7b= 45
76+10=86
Step-by-step explanation:
U would solve this by subbing in ur answer choices to see which ones make the equation true.
ur answer is : (-1,-8) , (0,-3), (3,12)
Answer:
2/3
Explanation:
Given the below;
We can see from the above that 9 is divisible by 3 and that 14 is divisible by 7, let's go ahead and reduce to the lowest term as shown below;
