去括号合并同类项a-(2x-2)m-2(3-2n)a-{b+(c-d)}-(5x+y)-3X(2x-3y)x-2(4x-
去括号合并同类项a-(2x-2)m-2(3-2n)a-{b+(c-d)}-(5x+y)-3X(2x-3y)x-2(4x-
先去括号,再合并同类项(1)(x-2y)-(y-2x)+(-3x+y) (2)(a-b+c)-(b-c+a)
去括号,合并同类项(x-3y)-(2x-y+2);(3a-2b)-(2a+3b)
去括号 2(a-b)-3(c+d) -5/2(m-n)+1/3(c+d) 去括号并合并同类项: (8x-5y)-(4x-
去括号并合并同类项 m-2(3-2n) (8a-7b)-2(4a-5b) -(5x+y)-3(2x-3y)
去括号:1.n-3(4-2m)2.-1/2(x+y)+1/4(p+q)合并同类项:1.3(-ab+2a)-(3a-b)2
-(-5x+y)-3(2x-3y)去括号再合并同类项求解
1.(m+n)-[3m+(-m+n)] 2.2x-3[3x-(2y-x)]+2y 先去括号,再合并同类项
1,5{2x-7y}-3{4x-10y} 2,{x-y}-[3x+{-x+y}] 去括号,合并同类项,
(5x-3y)-(2x+y)+(3y-2x)去括号合并同类项
合并同类项:-3x+2y-5x-7y
3x+2y-5(x+y)合并同类项