Toán Lớp 6: Bỏ ngoặc các biểu thức sau : a) (a+b-c) - (b -c +d) b) - (a -b +c)+(a-b+d) c) (a+b)-(-a +b -c) d) -(a+b) +(a+b+c) Ai giúp vớiiiiiiiiiii

Question

Toán Lớp 6: Bỏ ngoặc các biểu thức sau : a) (a+b-c) – (b -c +d) b) – (a -b +c)+(a-b+d) c) (a+b)-(-a +b -c) d) -(a+b) +(a+b+c) Ai giúp vớiiiiiiiiiii

Thanh Thu Tháng Bảy 27, 2022 Toán học 1 Comment 0 views

Toán Lớp 6: Bỏ ngoặc các biểu thức sau :
a) (a+b-c) – (b -c +d)
b) – (a -b +c)+(a-b+d)
c) (a+b)-(-a +b -c)
d) -(a+b) +(a+b+c)
Ai giúp vớiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

ngoclanhoa · Answer

Lời giải chi tiết:     a) (a+b-c)-(b-c+d)   =a+b-c-b+c-d   =a+(b-b)+(c-c)-d   =a+0+0-d   =a-d   b) -(a-b+c)+(a-b+d)   =-a+b-c+a-b+d   =(-a+a)+(b-b)-c+d   =0+0-c+d   =-c+d   c) (a+b)-(-a+b-c)    =a+b+a-b+c     =(a+a)+(b-b)+c     =2a+0+c     =2a+c     d) -(a+b)+(a+b+c)     =-a-b+a+b+c     =(-a+a)+(b-b)+c     =0+0+c     =c