Question

efetue as seguintes expressões :
a) 10.(-2)+(-5) .(-4) =
b) 9 .3+8.(-2) = ​

Answer 1

Explicação passo-a-passo:

$\blue {{ _{\heartsuit} } \heartsuit_{\heartsuit} } \: \: \mathsf {OI, TUDO \: \: J\acute{O}IA \: ? \: \:\blue {{ _{\heartsuit} } \heartsuit_{\heartsuit} } }$

a)

$\sf{10\cdot( - 2) + ( - 5)\cdot( - 4)} \\ \sf{10\cdot( - 2) +20} \\ \sf{ - 20 + 20} \\ \boxed{\red{ \sf{0}}}$

b)

$\sf{9\cdot3 + 8\cdot( - 2)} \\ \sf{27 + 8\cdot( - 2)} \\ \sf{27 + ( - 16)} \\ \sf{27 - 16} \\ \boxed{\red{ \sf{11}}}$

$\mathcal{ATT : ARMANDO}$

$\mathfrak{\small04\diagup01\diagup2021} \\ \mathfrak{\small{10} :{40} \: \: am}$