精品文档---下载后可任意编辑(1)+x)+x=÷2 (2)2(X+X+= (3)25000+x=6x (4)3200=440+5X+X (5)=6 (6)12x-8x= (7) +2X=15 (8)= (9)x+= (10)= (11)91÷x= (12) X+= (13) 15x=3 (14) 3x-8=16 (15) 3x+9=27 (16) 18(x-2)=270 (17) 12x=300-4x (18) 7x+= (19) 3x÷5= (25) +8=43 (26) 6x-3x=18 (27) 7+x)= (28) ÷x= (29) = (30) x÷=90 (31) (x+6)=× (32) (33) 9x-40=5 (34) x÷5+9=21 精品文档---下载后可任意编辑(35) 48-27+5x=31 (36) +x+21=56 (37) x+2x+18=78 (38) (200-x)÷5=30 (39) (x-140)÷70=4 (40) 20-9x=2(41) x+= (42) = (43) = (44) ÷x= (45) 5x+= (46) 5(x+8)=102 (47) x+3x+10=70 (48) 3(x+3)=50-x+3 (49) 5x+15=60 (50) =2 (51) ×7+4x= (52) x÷ (53) ×6= (54) 6x+= (55) 150×2+3x=690 (56) 2x-20=4 (57) 3x+6=18 (58) 2+x)= (59) (x-3)÷2= (60) +9x= (61) 3x=x+100 (62) x+= (63) 6x+18=48 (64)3(x+= 精品文档---下载后可任意编辑(65)12x-9x= (66)13(x+5)=169 (67) 2x-97= (68)= (69)42x+25x=134