Răspuns: [tex]\color{red}\LARGE\boxed{\bf 260}[/tex]
Explicație pas cu pas:
Salutare!
[tex]\large\bf 26\cdot (-12) +26\cdot(-18)+26\cdot40=[/tex]
[tex]\large\bf 26\cdot [(-12) +(-18)+40]=[/tex]
[tex]\large\bf 26\cdot (-12 -18+40)=[/tex]
[tex]\large\bf 26\cdot (-30+40)=[/tex]
[tex]\large\bf 26\cdot 10=[/tex]
[tex]\color{red}\LARGE\boxed{\bf 260}[/tex]
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