The problem is that 7^2 is 7*7, and the same for 8^2. The right answer is the square root of 15, or 3.87
So you first want to move all variables to one side.
2x = 1/8 + 4x
So perform the opposite of each operation to move it.
2x - 4x = 1/8 + 4x - 4x
-2x = 1/8
And then just divide both sides by -2
-2x / -2 = 1/8 / -2
x = -1/16
Answer:
111
t + 11
x
Step-by-step explanation:
Okay so the first one is right.
The second one is wrong.
the third one is right.
The forth one is wrong.