Question

simplify the expression:
9d + 10d - 3d + -7d

Explanation:

Step1: Combine like terms

We have the expression \(9d + 10d - 3d + (-7d)\). First, add the coefficients of the like terms (terms with the variable \(d\)).

The coefficients are \(9\), \(10\), \(-3\), and \(-7\).

First, add \(9d + 10d\): \(9 + 10 = 19\), so \(9d + 10d = 19d\).

Then, add \(19d - 3d\): \(19 - 3 = 16\), so \(19d - 3d = 16d\).

Next, add \(16d + (-7d)\). Adding a negative is the same as subtracting, so \(16 - 7 = 9\), so \(16d + (-7d) = 9d\).

Answer:

\(9d\)