from -9---------------------------0------------------6, there are 9+6 units, namely 15, half that is 7.5, 7.5 units from -9 is -1.5.
The best approach would be to subtract 6 from both sides of the equation for the first equation
5x = y + 6
5x - 6 = y
Therefore the y is isolated so you can substitute that into the second equation
2x - 3(5x -6) = 4
~~hope this helps~~
<span>A linear equation is any equation used to define a line. </span>
2-x+3=16 is the answer. good luck?