Question

Fill in the blanks:

$-40+\{19+(-36\left)\right\}=\{-40+\mathrm{\_\_}\}+\{-36\}$

Answer 1

Given: $-40+\{19+(-36\left)\right\}=\{-40+\mathrm{\_\_}\}+\{-36\}$

We know that by changing the grouping of addends does not change the sum (Associative property).

i.e., $\mathrm{a}+\{\mathrm{b}+\mathrm{c}\}=\{\mathrm{a}+\mathrm{b}\}+\mathrm{c}$

Here, $\mathrm{a}=-40,\mathrm{b}=19$ and $\mathrm{c}=-36$

Hence, $-40+\{19+(-36\left)\right\}=\{-40+\underline{19}\}+\{-36\}$.