Answer:
The required expression is 0.9b + 2.
Step-by-step explanation:
The given expressions are 3.8b−7 and −2.9b+9.
We have to find the simplified form of their addition.
Add both the expressions.
[tex](3.8b-7)+(-2.9b+9)[/tex]
[tex]3.8b-7-2.9b+9[/tex]
Combine like terms.
[tex](3.8b-2.9b)+(9-7)[/tex]
[tex]0.9b+2[/tex]
Therefore the required expression is 0.9b + 2.
