6j−5=4j+15

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

1. The equation is 6j - 5 = 4j + 15.

2. First, let's get all the terms with 'j' on one side of the equation and the constants on the other side. We can do this by subtracting 4j from both sides and adding 5 to both sides. This gives us:

   6j - 4j = 15 + 5

3. Simplifying both sides of the equation gives us:

   2j = 20

4. Finally, to solve for 'j', we divide both sides of the equation by 2:

   j = 20 / 2

5. So, j = 10.