Answer:
57
Step-by-step explanation:
first do what is in the brackets then the parentheses, then multiply the 3
Step-by-step explanation:

Answer:
You can solve one by... it's hard to explain So i'll just show you
Step-by-step explanation:
Here's an example,
2x+7=4+5x
First you subtract the variables on both sides (lower variable)
2x+7=4+5x
-2x -2x
Which will leave you
7=4+3x
The subtract the whole number on each side (lower number)
7=4+3x
-4 -4
Which will leave you
3=+3x
Then you divide on both sides
3/3 3/3
which should leave you
x=1
X^2+y^2=R^2
64+36=R^2
R=10
x^2+y^2=100