Question

d) (+36): (+ 3) =
e) (- 45): (-15) =
f) (+ 48): (-12) =​

Answer 1

Olá!

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Regra de sinais :

( + ) ( + ) = +

( - ) ( - ) = +

( + ) ( - ) = -

( - ) ( + ) = -

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Resolução :

$\\ { \large \displaystyle \sf {d) \: ( + 36) \div ( + 3) = }}$

${ \large \displaystyle \sf { + (36 \div 3)} = }$

$\boxed{ \boxed{ \pink{{ \large \displaystyle \sf { \: +12 \: \: }}}}}$

${ \large \displaystyle \sf {e) \: ( - 45) \div ( - 15) = }}$

${ \large \displaystyle \sf { + (45 \div 15)} = }$

$\boxed{ \boxed{ \pink{{ \large \displaystyle \sf { \: +3 \: \: }}}}}$

${ \large \displaystyle \sf {f) \: ( + 48) \div ( - 12) = }}$

${ \large \displaystyle \sf { - (48 \div 12)} = }$

$\boxed{ \boxed{ \pink{{ \large \displaystyle \sf { \: - 4 \: \: }}}}}$