Question

Determine as operações com números inteiros:
A)(+40) : (-8) =
B)(-5) • (-4) + 21 =
C)(-2) • (-8) + (-3) • (-3) =

Answer 1

→ Cálculo :

A)

$(+40)\div(-8)=\large\boxed{{\red{-5}}}$

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B)

$(-5)\times(-4)+21=$

$20+21=$

$\large\boxed{{\red{41}}}$

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C)

$(-2)\times(-8)+(-3)\times(-3)=$

$16+(-3)\times(-3)=$

$16+9=$

$\large\boxed{{\red{25}}}$

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Att, PurpleStars ❤️