How do you solve #10=-3z-8#?

2 Answers

#z = -6#

Explanation:

You want to move all of the numbers to one side and keep the variable on the other side.

In this case, you move the #-8# to the left by adding #8# to each side, leaving you with

#18 = -3z#

Now that you have a number and a sole variable, you have to divide the variable so that the variable is alone. Therefore, you have to divide both sides by #-3#, leaving you with

#-6 = z#

Jun 5, 2018

#z=-6#

Explanation:

#10=-3z-8#

add 8 to both sides:

#10+8=-3z-8+8#

#18=-3z#

divide both sides by -3:

#18/(-3)=(-3z)/(-3)#

#-6=z#

flip equation:

#z=-6#