(45)5x+12.5=32.3
(46)5(x+8)=102
(47)x+3x+10=70
(48)3(x+3)=50-x+3
(49)5x+15=60
(50)3.5-5x=2
(51)0.3×7+4x=12.5
(52)x÷1.5-1.25=0.75
(53)4x-1.3×6=2.6
(54)6x+12.8=15.8
(55)150×2+3x=690
(56)2x-20=4
(57)3x+6=18
(58)2(2.8+x)=10.4
(59)(x-3)÷2=7.5
(60)13.2x+9x=33.3
(61)3x=x+100
(62)x+4.8=7.2
(63)6x+18=48
(64)3(x+2.1)=10.5
(65)12x-9x=8.7
(66)13(x+5)=169
(67)2x-97=34.2
(68)3.4x-48=26.8
(69)42x+25x=134
(70)1.5(x+1.6)=3.6
(71)2(x-3)=5.8
(72)65x+7=137
(73)9x+4×2.5=91
(74)4.2 x+2.5x=134
(75)10.5x+6.5x=51
(76)89x-43x=9.2
(77)5x-45=100
(78)1.2x-0.5x=6.3
(79)23.4=2x
(80)4x-x=48.6
(81)4.5x-x=28
(82)X-5.7=2.15
(83)5X-2X=18
(84)3X+0.7=7