Mathematics, 09.12.2020 15:30, meganwintergirl

2 – Efetue: a) (+7) . (- 5) b) (-9) . (- 8) c)(-15) : (+5) d) (+125) : (+25)

preciso disso pra agora

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2 – Efetue: a) (+7) . (- 5) b) (-9) . (- 8) c)(-15) : (+5) d) (+125) : (+25)

preciso dis...