Question

matematyka z plusem kl 1 gim zad .4 Napisz w najrrostrzej postacji. a) (x-2)-(2-x)= b) (a+b)+(2a-b)-(a-2b)= c) (3x-y+1)-(x+y)+(y-x)= plis na jutro

Answer 1

a) (x-2)-(2-x)=x-2-2+x=2x-4

b) (a+b)+(2a-b)-(a-2b)= a+b+2a-b-a+2b=2a+2b

c)(3x-y+1)-(x+y)+(x-y)=3x-y+1-x-y+x-y=3x-3y+1

Answer 2

a)

(x-2)-(2-x)=  x-2 -2 +x =2x -4

b)

(a+b)+(2a-b)-(a-2b)=a+b +2a -b -a +2b = 2a+2b

c)

(3x-y+1)-(x+y)+(y-x)=3x - y +1 -x -y +y -x= x -y +1