To solve the equation 12 + 3b = 15b, we first want to isolate the variable b.
1. Start by subtracting 3b from both sides:
12 + 3b – 3b = 15b – 3b
This simplifies to:
12 = 12b
2. Now, divide both sides by 12 to solve for b:
b = 12 / 12
This gives us:
b = 1
3. To confirm the solution, substitute b back into the original equation:
12 + 3(1) = 15(1)
This simplifies to:
12 + 3 = 15
Which is:
15 = 15
Since both sides are equal, our solution is verified.
Therefore, the solution to the equation is b = 1.