Question

Me ajudem



B) 3×(-6)+(-5)×(-7)

C) (-7)+(-8):(-2)

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Answer 1

Explicação passo a passo:

B)

$3\left(-6\right)+\left(-5\right)\left(-7\right)\\-18+\left(-5\right)\left(-7\right)\\-18+35\\17$

C)

$\left(-7\right)+\left(-8\right)\div \left(-2\right)\\\left(-7\right)+4\\-3$