Question
Find $(–7) –8 – (–25)$
✓
Answer
$(–7) –8 – (–25)$
$= (–7) +$ (additive inverse of $8) (–25)$
$= (–7) + (–8) – (–25)$
$= –15 – (–25)$
$= –15 +$ (additive inverse of $–25)$
$= -15 + (+25)$
$= -15 + (+15) + (+10)$
$= 0 + (+10) = 10$
$= (–7) +$ (additive inverse of $8) (–25)$
$= (–7) + (–8) – (–25)$
$= –15 – (–25)$
$= –15 +$ (additive inverse of $–25)$
$= -15 + (+25)$
$= -15 + (+15) + (+10)$
$= 0 + (+10) = 10$
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