Real Numbers !!!
Algebra
Level
2
For all real numbers, b and c, such that the product of c and 3 is b, which of the following expressions represents the sum of c and 3 in terms of b.
b/3+3
3b+3
3(b+3)
(b+3)/3
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1 solution
First let us set up the equation we are told—that the product of c and 3 is b
THEREFORE: 3c = b
Now we must isolate c so that we can add its value to 3:
3c = b
THEREFORE: c = b/3
Finally, let us add this value to 3.
b/3 + 3
Our final answer is b/3 + 3