Firstly, expand the equation.

Next, move the variable x to the left and all the constant to the right.

Then, solve for x.
Answer:
33
Step-by-step explanation:
What you do is you take 57 and since it is a right triangle you take 90 and add them together. You will get 147. You will then minus this from 180 to get 33.
24 I think is the answer but I'm not sure. Hope I helped:)
Answer:
NO = 20
Step-by-step explanation:
If the pieces are in the ratio of 3:1:5 and the whole thing is 36, then set up an equation:
3x + 1x + 5x = 36
and solve, see image.
Answer:
The Tip is $7.
Step-by-step explanation:
20% of 35$ is 7$.