Răspuns :
6 × a - ( 13 × 47 + 895 ) = 1 200
6 × a - ( 611 + 895 ) = 1 200
6 × a - 1 506 = 1 200
6 × a = 1 200 + 1 506
6 × a = 2 706
a = 2 706 : 6
a = 451
6 × a - ( 611 + 895 ) = 1 200
6 × a - 1 506 = 1 200
6 × a = 1 200 + 1 506
6 × a = 2 706
a = 2 706 : 6
a = 451
6•a-(13*47+895)=1200
6•a-(611+895)=1200
6•a-1506=1200
6•a=1200+1506
6•a=2706
a=2706:6
a=451
6•a-(611+895)=1200
6•a-1506=1200
6•a=1200+1506
6•a=2706
a=2706:6
a=451