Question

Calculati, folosind scoterea unui factor comun a)27•52+56•27-27•8 b) 84•707+83-408•83​

Answer 1

Răspuns:

Explicație pas cu pas:

$\bf a)~~27\cdot 52+56\cdot 27-27\cdot 8 =$

$\bf ~27\cdot \big( 52+56-8\big) =$

$\bf ~27\cdot 100 =$

$\purple{\boxed{\bf ~2~700~ }}$

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$\bf b) ~~83\cdot 707+83-408\cdot 83=$

$\bf ~83\cdot \big(707+1-408\big)=$

$\bf ~83\cdot 300=$

$\red{\boxed{\bf ~24~900~}}$

Answer 2

Răspuns:

a)27•52+56•27-27•8 =27(52+56-8)=27·100=2700

b) 83•707+83-408•83​= 83(707+1-408)=83·300=24900