Question

(4x-5y)-(x-2y)=

(5a-6b)-(x-2y)=

(2x-5y)-(4x-7y-3)=

14a+8b-(a+8b-7)=

15x-8y-(15x-y-1)=

5a-7b-(3+a-5b)+

-(2x+y)+(x-3y+5)=

-(x-2y)+(3x-4y-2)=

(a-2b+3)-(2a+4b+5)=

prosze jak najszybciej

Answer 1

(4x-5y)-(x-2y)=  4x-5y-x+2y= 3x-3y

(5a-6b)-(x-2y)= 5a-6b-x+2y

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

14a+8b-(a+8b-7)= 14a+8b-a-8b+7= 13a+7

15x-8y-(15x-y-1)= 15x-8y-15x+y+1= -7y+1

5a-7b-(3+a-5b)= 5a-7b-3-a+5b= 4a-2b-3

-(2x+y)+(x-3y+5)= -2x-y+x-3y+5= -x-4y+5

-(x-2y)+(3x-4y-2)= -x+2y+3x-4y-2= 2x-2y-2

(a-2b+3)-(2a+4b+5)= a-2b+3-2a-4b-5= -a-6b-2