5(2x−3)−6x= 21​ (4x−10)

Sure, let's solve the equation step by step:

1. First, distribute the 5 in the first part of the equation and the 21 in the second part of the equation:

   10x - 15 - 6x = 84x - 210

2. Then, combine like terms on both sides of the equation:

   4x - 15 = 84x - 210

3. Next, get all the x terms on one side of the equation and the numbers on the other side. Subtract 4x from both sides and add 210 to both sides:

   -80x = 195

4. Finally, solve for x by dividing both sides by -80:

   x = 195 / -80

So, x = -2.4375.