The answer is C. I solved for the first variable in one of the equations then substitute the result into the other equation.
You could try and multiply I believe so .
Step-by-step explanation:
The correct numbers are
4 = 5
8 = 10
12 = 15
16 = 20
20 = 25
Hope it will help :)❤
You can always add or subtract
same value to/from both sides of equation. The same is true about multiplication and division.
In your case you have to subtract
x from both sides of equation in order to get rid of it on the left side:


But it's easier to remember that if you want to move some member of equation to other side, you just have to
change it's sign. Let's practice a bit using your equation (I have added "plus" signs where they are usually omitted to better understend what's going on):

Move
2y to the right side:

Move
8 to the left side:

Move both
x and
2y to the right side: