Question

The mean (average) of the two numbers, a and b,is given by the equation.

m=a+b/2

Solve this equation for a

Answer options:

a=2m-2b
a=b-2m
a=2m/b
a=2m-b

Answer 1

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Answer 2

a=2m-b is what i get off the top of my head

Answer 3

If the equation is:

m=(a+b)/2, then the solution is:

2m=a+b we can rewrite this equation as:

a+b=2m
a=2m-b

Answer 4

m=(a+b)/2
2m=a+b
2m-b=a
a=2m-b