Question

What is [40 -(-8)] - [10 + (-2)] + 21 =

Answer 1

We have the following:

`\begin{gathered} \left[40-\left(-8\right)\right]-\left[10+-2\right]+21 \\ \left[40+8\right]-\left[10-2\right]+21 \\ 69-8=61 \end{gathered}`

the answer is 61