# How do you solve #15= - 11d - 18#?

##### 1 Answer

#### Explanation:

Isolate the

So in this case, you would have to add *BOTH* sides of the equation to balance it on both sides.

If you don't then, the equation would be unbalanced and you **ONLY** make your life harder and the equation would be impossible to solve.

After you have added **BOTH** sides, you will get

#15 + 18 = -11d - cancel(18) + cancel(18)#

#33 = -11d#

You isolated the

Do that, you would like to divide *BOTH SIDES* to keep the equation balanced for the same reason as above.

*REMEMBER, NOT TO LOSE THE NEGATIVE SIGN DURING YOUR CALCULATIONS BECAUSE THEN YOU WOULD CHANGE THE ENTIRE PROBLEM.*

After that, you will get to the final answer

#33/(-11) = (cancel(-11)d)/cancel(-11)#

#d = -3 #