Question

(-9y+3)-(-2y+5) Please solve :)

Answer 1

We need to simplify the expression:

$\left(-9y+3\right)-\left(-2y+5\right)$

Notice that the minus before the parenthesis changes the signs inside the parenthesis:

$\begin{gathered} \left(-9y+3\right)-\left(-2y+5\right) \\ \\ -9y+3+2y-5 \end{gathered}$

Now, we need to group like terms, i.e., add the terms multiplying y and then add the constant terms:

$\begin{gathered} -9y+3+2y-5 \\ \\ -9y+2y+3-5 \\ \\ \left(-9+2\right)y-2 \\ \\ -7y-2 \end{gathered}$

Therefore, after simplifying the expression, we obtain:

$-7y-2$