The answer would be 6.7b + 2
In order to simplify this, simply add the like terms together.
3.8b + 2.9b = 6.7b
-7 + 9 = 2
Now just put those two together
6.7b + 2
0.9b + 2
First, you'd add 3.8b and -2.9b together, which makes 0.9b. Next, you would add -7 and 9. I say -7 instead of 7 because with minuses before a positive number, you can make it addition and just turn the number after into a negative number instead of positive to make it easier on yourself. Hope this helped.
calculate the sum of (-2.9+9)
Calculate the sum of (-7+6.1)
The required expression is 0.9b + 2.
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.
Combine like terms.
Therefore the required expression is 0.9b + 2.