Question

me ajudaaaaaa
a) (-9)-(-9)
b) (+13)-(-4)
c) 0-(+7)
pfvr faz a conta,obg​

Answer 1

$\large{a)( - 9) - ( - 9)} \\ \large{ - 9 + 9} \\ \large \boxed{ \: \red{ 0 \: }}$

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$\large{b)( + 13) - ( - 4)} \\ \large{13 + 4} \\ \large \boxed{ \red{ 17 }}$

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$\large{c)0 - ( + 7)} \\ \large{0 - 7} \\ \large \boxed{ \red{ - 7 }}$

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Att, IzabelaCristina2006 ❤️ ♈