What does x equal if 5x+6=2x+15

5x+6=2*+15

-6. - 6

5*=2*+9

-2. - 2

3*=9

3*/3=9/3

*=3

To find the value of x, isolate the x first,

5x + 6 = 2x + 15

Subtract 6 to both sides because whatever you do on one side you would always to on the other side.

5x = 2x + 9

Subtract 2x from both sides

3x = 9

Divide to isolate the x

x = 3 is your answer