7b−8=2b+42

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

1. First, we need to get all the terms with 'b' on one side of the equation and the constants on the other side. We can do this by subtracting 2b from both sides and subtracting 42 from both sides. This gives us:

   7b - 2b = 42 + 8

2. Simplify both sides:

   5b = 50

3. Finally, to solve for 'b', we divide both sides by 5:

   b = 50 / 5

4. Simplify to get the final answer:

   b = 10