Răspuns: [tex]\color{red}\LARGE\boxed{\bf -1009}[/tex]
Explicație pas cu pas:
[tex]\large\bf [(-1) + (-2 ) + (-3) + (-4) + ..... + (-2018)]:2019=[/tex]
[tex]\large\bf (-1 -2 -3-4 - ..... -2018):2019=[/tex]
- Scoatem factor comun semnul -
[tex]\large\bf -(1 +2+3+4+...+2018):2019=[/tex]
- Aplicam in paranteza suma lui Gauss
[tex]\large\bf [-(1 +2018)\cdot2018:2]:2019=[/tex]
[tex]\large\bf (-2019\cdot2018:2):2019=[/tex]
[tex]\large\bf -2019\cdot1009:2019=[/tex]
[tex]\color{red}\Large\boxed{\bf -1009}[/tex]
==pav38==
