The correct option is C) -16
Consider the provided equation.
Open the parentheses
Add the like terms.
Subtract 5x from both the sides.
Subtract 14 to the both sides.
Hence, the correct option is C) -16
7x - 2x - 2 = 6x + 14
5x - 2 = 6x + 14
6x - 5x = -2 - 14
x = -16
The given equation :
To solve the above equation for x , by using BODMAS first we simplify the bracket .
Now, Subtract 6x and add on both the sides , we get
Multiply -1 on the both sides , we get
Hence, the solution to the given equation is
option (b) is correct
to find the solution of this system, we need to convert it into reduced row-echelon form. we have,
after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,