Question

Oblicz :

(Tylko pamiętaj o redukcji ) :

1. (5ab - 3ac +2) + ( - 8 ab + 4ac - 7 bc - 3 ab - 8 bc + 5 ac + 2) =

2. - 4 x + ( 2x - 3y ) - (-7 + 5x - 2 +) + (- 9 + 4y - 3) - ( -2x + 3y - 7) =

3. - (2m - 3n) + ( 4p - 5q - 5q + 7 m ) - ( - 6 + 3 - 1) + ( - 5m - 6q +1) =

Answer 1

1. (5ab - 3ac +2) + ( - 8 ab + 4ac - 7 bc - 3 ab - 8 bc + 5 ac + 2) =5ab-3ac+2-8ab+4ac-7bc-3ab-8bc+5bc+2=-6ab+ac+6bc+4

2.  - 4 x + ( 2x - 3y ) - (-7 + 5x - 2 +) + (- 9 + 4y - 3) - ( -2x + 3y - 7) =-4x+2x-3y+7-5x+2-9+4y-3+2x-3y+7=-5x-4y+4

3. - (2m - 3n) + ( 4p - 5q - 5q + 7 m ) - ( - 6 + 3 - 1) + ( - 5m - 6q +1) =-2m+3n+4p-5q-5q+7m+6-3+1=5m+3n+4p-10q+4

 

Answer 2

1.   (5ab - 3ac +2) + ( - 8 ab + 4ac - 7 bc - 3 ab - 8 bc + 5 ac + 2) =5ab-3ac+2-8ab+4ac-7bc-3ab-8bc+5bc+2=-6ab+ac+6bc+4

 

 

2.  - 4 x + ( 2x - 3y ) - (-7 + 5x - 2 +) + (- 9 + 4y - 3) - ( -2x + 3y - 7) =-4x+2x-3y+7-5x+2-9+4y-3+2x-3y+7=-5x-4y+4

 

 

 

3. - (2m - 3n) + ( 4p - 5q - 5q + 7 m ) - ( - 6 + 3 - 1) + ( - 5m - 6q +1) =-2m+3n+4p-5q-5q+7m+6-3+1=5m+3n+4p-10q+4

 

 

Serdecznie Pozdrawiam.