Answer:
Hmmmmmmmmm, is it an addition? I think it's dividing (It's addition I was playing around)
Step-by-step explanation:
If you have a problem like:
4x+2y=20
2x+2y=16
You would subtract
4x-2y=20
-2x+2y=16
You would get the new problum
2x=4
You now want to divide the 2 on both sides to solve for x
x=2
Now that you've solved for X you want to solve for y. So use substitution to solve for y. You would want to substatute the x for the 2 in either of the problums. I'll use the first one.
4(2)+2y=20
You first want to multiply te 4(2) you would get a new problum.
8+2y=20
Now you want to subtract the 8 on both sides.
2y=12
The last step to solve for y is to divide the 2 on both sides.
Y=6
So your answers would be
x=2
y=6
Answer:
The first question is A.
The second question is C.
The thid question is B., I think i'm not quit sure sorry
Answer:
15
Step-by-step explanation:
Because x=y÷7
i.e,105÷7=15
Answer:
14.11
Step-by-step explanation:
.83*16.5=14.11
