Which is the simplified form of the expression 3(7/5x + 4) - 2(3/2 - 5/4x)

Step-by-step explanation:

I think you meant 3([7/5]x + 4) - 2(3/2 - [5/4]x).  If that's the case, then identify the LCD:  It is 20.  Multiply both [7/5]x + 4 and 3/2 - [5/4]x by 20 and then divide the resulting expression by 20:

3(28x + 80) - 2(30 - 25x)

               20

Next, perform the indicated multiplication:

 84x + 240 - 60 + 50x

                 20

This simplifies to:

 34x + 180        17x + 9

=

       20                 10

Next time, please share the answer choices.

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9