Answer:
The first option
Step-by-step explanation:
Because when you multiply the first equation by 2, it sets the -x to -2x which helps cancel the variable out allowing you to easily solve the system of equations.
For this case we have the following quadratic equation:

Rewriting the equation we have:

From here, we have:

Substituting values in the quadratic equation we have:
Rewriting the equation we have:
Answer:
The values of x are given by:

Answer:6
Step-by-step explanation:
You do 6/2 first which is 3 then you subtract 3 from 4 which is 1. Then you multiply 1 by 2 which is 2 and the last step would be multiplying 2 by 3 which is 6
7 and 1/3 so 7 1/3
Hope this helps
Answer:D
Step-by-step explanation: