一元一次方程练习题页.pdf

1）7(2x-1)-3(4x-1)=4(3x+2)-1; （2） (5y+1)+ (1-y)= (9y+1)+ (1-3y); (3)20%+(1-20%)(320-x)=32040% (4)2(x-2)+2=x+1 (5)2(x-2)-3(4x-1)=9(1-x) (6)11x+64-2x=100-9x (7)15-(8-5x)=7x+(4-3x) (8)3(x-7)-29-4(2-x)=22 (9)3/22/3(1/4x-1)-2-x=2(10)2(x-2)-3(4x-1)=9(1-x) (11)11x+64-2x=100-9x (12)15-(8-5x)=7x+(4-3x) (13)3(x-7)-29-4(2-x)=22 (14)3/22/3(1/4x-1)-2-x=2 (15) x-(x-1)/2=2-(x+2)/3(16) x-2=(x-1)/2-(x+2)/3(17) (3x-1)/2=1-(2x+1)/6(18) (x-3)/=1+(x+4)/(19) 3(x-2)=4x-5(20)320+x=18x/10(21)2(x-y)-4(x-y)3 -(x-y)+4(x-y)2 (22)3 （x+y）2-4(y-x)-7(x-y)+4(x+y)2 (23)(3x-5y)-(6x+7y)+(9x-2y)（24）2a-3b-5a-(3a-5b)（25）(6m2n-5mn2)-6(m2n-mn2)(26) (3x2-4xy+2y2)+(x2+2xy-5y2)(27) (3x2-4xy+2y2)-(x2+2xy-5y2)（28）m2+(-mn)-n2+(-m2)-（29）(x-y)2-(x-y)2-(x-y)2-(x-y)2 (30) 2a-3b-5a-(3a-5b)(1)a-(a-3b+4c)+3(-c+2b) (2)(3x2-2xy+7)-(-4x2+5xy+6) (3)2x2-3x+6+ 4x2-(2x2-3x+2)。