All you have to do is subtract 11-6=5
1+5=6
6+5=11
11+5=16
16+5= _
_+5=_
Hope this helps:)
For this case, the first thing we must do is define variables:
x: first number
y: second number
We now write the system of equations:
x + y = 20
y = 2x + 35
Solving the system we have:
x = -5
y = 25
Answer:
The numbers are:
x = -5
y = 25
Well I got 17.5
You would start with 6x1=6
Then you would add 7: 6+7=13
Next you would multiply 13 by (1/2): 13(1/2)=6.5
Finally you would add 11 to 6.5: 6.5+11= 17.5
5x + 6 + (-7x - 4)
5x + 6 - 7x - 4
-2x + 2