Answer:
x=2
Step-by-step explanation:
9x+9=25+x
9x-x=25-9
8x=16
x=2
Answer:
Step-by-step explanation:
yes please
10 % = 24
20 % = 2 x 10%
20 % = 48
240 + 48 = 288
hope this helps you
The equation (form) is: 
The solution of the equation is: 
Explanation:
First, let's call the number we are going to solve for "x".
Then two thirds of this number can be written as:

Then "plus 4" means add 4 we get:

"is 7" means that the above expression is equal to 7 (as follows):

The solution of the above equation is:

Answer:
Step-by-step explanation:
x² - 12x + a = (x + b)²
x² - 12x + a = x² + 2xb + b²
-12 = 2b and a = b²
b = -6
a = b² = 36