Question
$[(-8) + \_\_\_\_\_\_ ] + \_\_\_\_\_\_\_\_ = \_\_\_\_\_\_\_\_ + [(-3) + \_\_\_\_\_\_\_\_ ] = -3$
✓
Answer
$[(-8) + (-3)] + 8 = (-8) + [(-3) + 8]$
$[\because$ addition is associative, i.e. $a + (to + c) = (a + b) + c] = -8 + 5 = -3$
$[\because$ addition is associative, i.e. $a + (to + c) = (a + b) + c] = -8 + 5 = -3$
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