Given the following formula solve for a
s = a+b+c/2

Step-by-step explanation:

Given formula:

To solve for

In order to solve for we will try to isolate on one side of the equation.

Steps to isolate .

1) Multiplying both sides by to remove fractions.

2) Subtracting both sides by

3) Subtracting both sides by

Thus, we successfully isolated on one side. The formula for can be given as:

∴

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^