Which expression is equivalent to

5b+7−9b+3?

The expression 5b+7−9b+3 can be simplified by combining like terms:

= (5b - 9b) + 7 + 3
= -4b + 7 + 3
= -4b + 10

So, the equivalent expression is -4b + 10.

To simplify the expression 5b + 7 - 9b + 3, we can combine like terms.

First, let's combine the terms with the same variable, b. We have 5b and -9b, which can be combined to give us -4b.

Next, let's add the constants, 7 and 3. The sum of these is 10.

Therefore, the simplified expression is -4b + 10.