2º (+45)(-5)÷(+9)
= −225:(+9)
= -25
3º (-36)(-6)÷(-3)
= 216:(−3)
= -72
4º (+12)(+4)÷(+6)
= 48:(+6)
= +8
5º (+4)(-3)÷(+12)
= −12:(+12)
= -1
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Verified answer
2º (+45)(-5)÷(+9)
= −225:(+9)
= -25
3º (-36)(-6)÷(-3)
= 216:(−3)
= -72
4º (+12)(+4)÷(+6)
= 48:(+6)
= +8
5º (+4)(-3)÷(+12)
= −12:(+12)
= -1