Question

complete the following activity to solve the simultaneous equation 3x +2y =31 and 7x -2y =39​

Answer 1

Answer:

The value of x=7 and y=5

Step-by-step explanation:

                 $3x +2y =31----(1)\\\\ 7x -2y =39----(2)$

Adding equation(1) and (2) we get,

               $3x +2y +7x -2y=31+39\\ \\ 10x=70\\ \\ x=\frac{70}{10} =7$

Putting the value of x in equation (1) we get,

            $3x +2y =31\\ \\ 3(7)+2y=31\\ \\ 2y=31-21=10\\ \\ y=5$

Answer 2

Answer.....

i hope you get your answer please brainlist me!!