Answer:
C. x = 5
Step-by-step explanation:
x + 3 = 3x - 7
Add -3x and -3 on both sides.
x - 3x = -7 -3
Add or subtract like terms.
-2x = -10
Multiply -1 on both sides.
2x = 10
Divide 2 into both sides.
2x/2 = 10/2
x = 5
Answer:
c bye
Step-by-step explanation:
Question: Is this some kind of mind trick riddle or what lol!
Answer:
Step-by-step explanation:
Algebra level
Answer:

Step-by-step explanation:
The formula that is used to calculate the area of a rectangle is:

Where "l" is the lenght and "w" is the width.
You know that the area of that rectangle is:

And, according to the exercise, its lenght is 7 more than its width; then:

Then, you can make the corresponding substitution into the formula
:

Simplify:

Factor the equation. Find two numbers whose sum is 7 and whose product is -744. These are 31 and -24.
Then, you get:

The width of the rectangle is the positive value:

Then, the lenght is:
