Answer:
(3-4)+2*6=11
Step-by-step explanation:
3-4=-1,
2*6=12
-1+12=11
so john is x and if Maya has the same as john but -3 then
x+x-3
but sam is still missing and she has half of Maya which is 0.5x - 1.5
so the equation is
x+x-3+0.5x-1.5=68
and then you add 3 and 1.5 to 68 which is
2.5x=72.5
and you divide by 2.5 which is 29
John has 29 points
earrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
p*x+57-(-75*x+q)=0
In this type of equations, having more than one variable (unknown), you have to specify for which variable you want the equation solved.
Unless there is none then in that case there very well may be infinite solutions
Answer:
Option 2 
and option 4 
Explanation:
In option 1 
which is not the difference of squares
In option 2 using the formula
Clearly, the difference of squares
In option 3
not the difference of squares
In option 4
Clearly the difference of squares
In option 5 
not the difference of squares
In option 6 
not the difference of squares
