Question

10b - b + 1

Answer 1

Hello, you want to subtract 10b - b, because they are like terms. 1 is not a like term for 10b nor -b.

Remember, -b is the same as -1b, because multiplying any number by 1 does not change its value.

So, what 10b - b is really say, is: 10b - 1b.