Whats the answer to 3(z+18)=78

The answer to your question is z=8.

Hope this helps! :)

3z+54=78

You multiply 3 times 18 and you get 54 and then you do three times Z which is three easy and then you write it out and you get your answer

Since the angles are supplementary, we know that they must add up to equal 180 degrees by the definition of supplementary angles

set the sum of the 2 angles to equal 180 and solve for x

6x + 48 + 60 = 180
6x + 108 = 180
6x = 72
x = 12

you could check to make sure that your x value is correct by plugging it back into the equation

6(12) + 48 + 60 = 180
72 + 48 + 60 = 180
120 + 60 = 180
180= 180

hope this helped!