Răspuns:
Explicație pas cu pas:
[tex]\bf a)~~27\cdot 52+56\cdot 27-27\cdot 8 =[/tex]
[tex]\bf ~27\cdot \big( 52+56-8\big) =[/tex]
[tex]\bf ~27\cdot 100 =[/tex]
[tex]\purple{\boxed{\bf ~2~700~ }}[/tex]
------------------------------------
[tex]\bf b) ~~83\cdot 707+83-408\cdot 83=[/tex]
[tex]\bf ~83\cdot \big(707+1-408\big)=[/tex]
[tex]\bf ~83\cdot 300=[/tex]
[tex]\red{\boxed{\bf ~24~900~}}[/tex]
