Question

aplicando a propriedade distribuitiva,calcule:
a)3.(-5+2)=
b)-4.(-6+9)=
c)(-7+21).(-5)=
d)(8-24).7=
me ajudem por favor!!!​

Answer 1

A) 3(-5+2)

$\begin{gathered}\boxed{\begin{array}{lr} { \mathtt{3( - 5 + 2)}} \\ \\ - 15 + 6 \\ \\ \mathtt{\boxed{\red{ - 9}}}\end{array}}\end{gathered}$

B) -4(-6+9)

$\begin{gathered}\boxed{\begin{array}{lr} { \mathtt{ - 4( - 6 + 9)}} \\ \\ 24 - 36 \\ \\ \mathtt{\boxed{ \blue{ - 12}}}\end{array}}\end{gathered}$

C) (-7+21).(-5)

$\begin{gathered}\boxed{\begin{array}{lr} { \mathtt{( - 7 + 21)( - 5)}} \\ \\ (14)( - 5) \\ \\ \mathtt{\boxed{ \green{ - 70}}}\end{array}}\end{gathered}$

D) (8-24).7

$\begin{gathered}\boxed{\begin{array}{lr} { \mathtt{(8 - 24)7}} \\ \\ 56 - 168 \\ \\ \mathtt{\boxed{ \purple{ - 112}}}\end{array}}\end{gathered}$

Espero ter ajudado!

Answer 2

Explicação passo-a-passo:

3.(-5+2)

-15+6

-9

-4.(-6+9)

24-36

-12

(-7+21).(-5)

35-105

-70

(8-24).7

56-168

-112