Răspuns:
[tex]\large \bf (1)~~-2-(-3)+(4-7)-(3-2)=[/tex]
[tex]\large \bf -2+3+(-3)-(1)=[/tex]
[tex]\large \bf -2+3-3-1=\Large \boxed{\bf -3}[/tex]
[tex]\it~~~[/tex]
[tex]\large \bf (2)~~(-3+7)\cdot (-3-7)=[/tex]
[tex]\large \bf 4\cdot (-10)=\Large\boxed{\bf -40}[/tex]
[tex]\it~~~[/tex]
[tex]\large \bf (3)~~(-5+6):(-1)-(-5-6)=[/tex]
[tex]\large \bf~(-1):(-1)-(-11)=[/tex]
[tex]\large \bf~ 1 + 11= \Large\boxed{\bf 12}[/tex]
[tex]\it~~~[/tex]
[tex]\large \bf (4)~~(-3+6-9):(-3+1)-(-2-1):(-3)=[/tex]
[tex]\large \bf ~(-6):(-2)-(-3):(-3)=[/tex]
[tex]\large \bf ~3-1=\Large\boxed{\bf 2}[/tex]
[tex]\it~~[/tex]
[tex]\large \bf (5)~~(-12-18-48):(-5-1)+(-18+12):(-2-1)=[/tex]
[tex]\large \bf ~(-78):(-6)+(-6):(-3)=[/tex]
[tex]\large \bf ~13+(-6):(-3)=[/tex]
[tex]\large \bf ~13+2 = \Large\bf\boxed{\bf 15}[/tex]
[tex]\it~~~[/tex]
[tex]\large \bf (6)~~(-15-20+25):(-6+1)-(-7-3)=[/tex]
[tex]\large \bf~(-10):(-5)-(-10)=[/tex]
[tex]\large \bf~2-(-10)=[/tex]
[tex]\large \bf~2+10=\Large\boxed{\bf 12}[/tex]
==pav38==
