Question

Zad 24 Str. 165

a) a+(a-b)=

b) 2x-(x+4)=

c) 7-(-x+6)=

d) -(x+4)+(x+5)=

e) 1-(t+p)-(t-2)=

f) -(-y+2)+(-2y-4)=

Answer 1

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

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

c)7-(-x+6)=7+x-6=x+1

d)-(x+4)+(x-5)=-x-4+x-5=-9

e)1-(t+p) - (t-2)=1-t-p-t+2=3-2t-p

f) -(-y+2)+(-2y-4)=y-2-2y-4=-y-6

 

Myślę, że pomogłam ;)

Answer 2

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

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

c) 7-(-x+6)=7+x-6= 1+x

d) -(x+4)+(x+5)= -x-4+x+5=1

e) 1-(t+p)-(t-2)=1-t-p-t+2=3-2t-p

f) -(-y+2)+(-2y-4)=y-2-2y-4= -y-6