(4)X-0.8X=6 (5)12x-8x=4.8 (6)7.5×2X=15
(7)1.2x=81.6 (8)x+5.6=9.4 (9)52-x =15
(10)3x+9=2718 (11)12x=300-4x (12)7x+5.3=7.4
(13)7(x-2)=2x+3 (14)30÷x+25=85 (15)1.4×8-2x=6
(16)6x-12.8×3=0.06(17)410-3x=170 (18) 3(x+0.5)=21
(19)0.5x+8=43 (20) 6x-3x=18 (21)1.5x+18=3x
(22)5×3-x÷2=8 (23)0.273÷x=0.35 (24)1.8x=0.972
(25)x÷0.756=90 (26)9x-40=5 (27) x÷5+9=21
(28)48-27+5x=31 (29)10.5+x+21=56 (30) x+2x+18=78
(31)(200-x)÷5=30 (32)(x-140)÷70=4 (33) 0.1(x+6)=3.3×0.4
(34)4(x-5.6)=1.6 (35)7(6.5+x)=87.5 (36)(27.5-3.5)÷x=4
(37)x+19.8=25.8 (38)5.6x=33.6 (39) 9.8-x=3.8
(40)75.6÷x=12.6 (41)5x+12.5=32.3 (42) 5(x+8)=102
(43)x+3x+10=70 (44)3(x+3)=50-x+3 (45)5x+15=60
(46)150×2+3x=690 (47)0.3×7+4x=12.5 (48)x÷1.5-1.25=0.75
(49)4x-1.3×6=2.6 (50)20-9x=1.2×6.25 (51)6x+12.8=15.8
(52)2(2.8+x)=10.4 (53)(x-3)÷2=7.5 (54)13.2x+9x=33.3
(55)3x=x+100 (56) 3(x+2.1)=10.5 (57)12x-9x=8.7
(58)13(x+5)=169 (59)2x-97=34.2 (60) 3.4x-48=26.8
(61)42x+25x=134 (62)1.5(x+1.6)=3.6 (63)2(x-3)=5.8
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