解方程: (1) 3.5X+1.8=12.3 (2) 0.8X-4=1.6 (3) 5x÷2=10 (4)X-0.25X=3 (5) X+25X=21 (6) 4215X+5X=2 (7) 3.6X÷2=2.16 (8) X+27X=34 (9) X-235X=10 (10) X-25=310 (11) 2X+7X=910 (12) 38+X=25 (13) 710X=1425 (14) 12X=34 (15) 59X=10 (16) 180+6X=330 (17) 2.2X-1=10 (18) X-0.8X=10 (19) 15X÷2=60 (20) 4X+X=3.15 (21)3.4X+1.8=8.6 (22) 5X-X=2.4 (23) 1.5X-X=1 (24) 6.6X-6X=1.8 (25) 2X-23X=34 (26)0.5×16―16×0.2=4x (27)9.25-X=0.403 (28)16.9÷X=0. 3 (29)X÷0.5=2.6 (30)x+13=33 (31)3 - 5x=80 (32)1.8- 6x=54 (33)6.7x -60.3=6.7 (34)9 +4x =40 (35)0.2x-0.4+0.5=3.7 (36)9.4x-0.4x=16.2 (37)12 -4x=20 (38)1/3 x+5/6 x=1.4 (39)12 x+34 x=1 (40)18x-14 x= 12 (41)23 x-5×14 = 14 (42)12 +34 x=56 (43)22-14 x= 12 (44)23 x-14 x= 14 (45)x+14 x= 65 (46)23 x=14 x +14 (47)30 x-12 x -14 x=1 (48)1.2x-0.5x=6.3 (49)23.4=2x=56 (50)4x-x=48.6 本文来源:https://www.wddqw.com/doc/c612e32dcf1755270722192e453610661fd95a44.html