+80 First of we have the equation,
6x + 4x - 6 = 24 + 9x
Grouping all the x's onto one side we get,
6x + 4x - 9x = 24 + 6
10x -9x = 30
x = 30
Checking our answer we get,
6(30) + 4(30) - 6 = 24 + 9(30)
180 + 120 - 6 = 24 + 270
300 - 6 = 294
294 =294 this means our answer is correct.
Hope this was helpful
