Subtract: 2 (10b + 4) - (b - 2)
To begin, let's apply the distributive property to the first term inside the parentheses:
2 * 10b + 2 * 4 = 20b + 8.
Now, let's distribute the negative sign to the second term inside the parentheses:
-(b - 2) = -b + 2.
Now, we can combine the terms:
20b + 8 - (b - 2).
To subtract, we can change the subtraction inside the parentheses to addition and distribute -1 to the terms:
20b + 8 + (-b + 2).
Now we can combine like terms:
20b - b + 8 + 2.
The final result is:
19b + 10.