Solve C = a/a+12 -A
C= CHILD DOSE IN MILLIGRAMS
a = age of child
A = adult dosage in milligrams

Step-by-step explanation:

Assuming we want to solve:

Add A to both sides;

Cross multiply;

Expand:

Group similar terms:

Factor:

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x