解方程(带 ★ 的要检验) ① 2x+0.4x=48 ② 8x-x=14.7 ③ 35x+13x=9.6 ④ 5(x+3)=35 ⑤ x+3.7x+2=16.1 ⑥ 0.52×5-4x=0.6 ⑦ 0.7(x+0.9)=42 ⑧ 1.3x+2.4×3=12.4 ⑨ x+(3-0.5)=12 ⑩ 7.4-(x-2.1)=6 11 5x+34=3x+54 12 7x-27=13-3x 13 5x+2x=1.4+0.07 14 6x-3x=6÷5 15 x-13.4+5.2=1.57 16 0.4×25-3.5x=6.5 17 7x+3×1.4x=0.2×56 18 5×(3-2x)=2.4×5 19 6×(3-2x)=1.2×5 20 1.12x+(x-3)+x=153 21 (x-9)÷(98-x-9)=4 22 3(x-0.2)=9.6 23 10x+45×8=810 24 x-0.35x=0.91 25 0.3÷0.15+25x=12 26 7.5x+x=10.2 27 (1.5+x)×2=9 28 15x-5x+16=80 29 15.6÷4-3.5x=1.1 30 5x-4×12=22.5 31 14x÷3=6.3×4 32 (0.5+x)+x=9.8÷2 33 2(X+X+0.5)=9.8 34 25000+x=6x 35 3200=450+5X+X 36 X-0.8X=6 37 12x-8x=4.8 38 7.5*2X=15 39 1.2x=81.6 40 x+5.6=9.4 41 x-0.7x=3.6 42 91÷x=1.3 43 X+8.3=10.7 44 15x=3 45 3x-8=16 46 7(x-2)=2x+3 47 3x+9=27 48 18(x-2)=270 49 12x=300-4x 50 7x+5.3=7.4 51 3x÷5=4.8 52 30÷x+25=85 53 1.4×8-2x=6 54 6x-12.8×3=0.06 55 410-3x=170 56 3(x+0.5)=21 57 0.5x+8=43 58 6x-3x=18 59 7(6.5+x)=87.5 60 1.5x+18=3x 61 5×3-x÷2=8 62 0.273÷x=0.35 63 1.8x=0.972 64 x÷0.756=90 65 9x-40=5 66 x÷5+9=21 67 48-27+5x=31 68 10.5+x+21=56 69 x+2x+18=78 70 (200-x)÷5=30 71 (x-140)÷70=4 72 20-9x=1.2×6.25 73 0.1(x+6)=3.3×0.4 74 (27.5-3.5)÷x=4 75 x+19.8=25.8 76 5.6x=33.6 77 9.8-x=3.8 78 75.6÷x=12.6 79 5x+12.5=32.3 80 5(x+8)=102 81 x+3x+10=70 82 3(x+3)=50-x+3 83 5x+15=60 84 3.5-5x=2 85 0.3×7+4x=12.5 86 x÷1.5-1.25=0.75 87 4x-1.3×6=2.6 88 6x+12.8=15.8 89 150×2+3x=690 90 2x-20=4 91 3x+6=18 92 2(2.8+x)=10.4 93 (x-3)÷2=7.5 94 13.2x+9x=33.3 95 3x=x+100 96 x+4.8=7.2 97 6x+18=48 98 3(x+2.1)=10.5 99 12x-9x=8.7 100 13(x+5)=169 101 2x-97=34.2 102 3.4x-48=26.8 103 42x+25x=134 104 1.5(x+1.6)=3.6 105 2(x-3)=5.8 106 65x+7=42 107 9x+4×2.5=91 108 4.2 x+2.5x=134 109 10.5x+6.5x=51 110 89x-43x=9.2 111 5x-45=100 112 1.2x-0.5x=6.3 113 23.4=2x=56 114 4x-x=48.6 115 4.5x-x=28 116 X-5.7=2.15 117 15 5X-2X=18 118 3X+0.7=5 119 3.5×2= 4.2+x 120 26×1.5= 2x+10 121 0.5×16―16× 122 0.2=4x 123 13 9.25-X=0.403 124 16.9÷X=0.3 125 23x=14x+14 126 x+14x=65 127 3-5x=80 128 1.8 +6x=54 129 6.7x-60.3=6.7 130 9+4x=40 131 2x+8=16 132 23x-14x=14 133 1.2x-8=4 134 3x-8=30 135 6x+6=12 136 3x-3=1 137 5x-3x=4 138 2x+16=19 139 5x+8=19 140 14-6x=8 141 15+6x=27 142 5-8x=4 143 7x+8=15 144 9-2x=1 145 4+5x=9 146 10-x=8 147 8x+9=17 148 9+6x=14 149 x+9x=4+7 150 2x+9=17 151 8-4x=6 152 6x-7=12 153 7x-9=8 154 x-56=1 155 8-7x=1 156 x-30=12 157 6x-21=21 158 6x-3=6 159 9x=18 160 4x-18=13 161 5x+9=11 162 6-2x=11 163 x+4+8=23 164 7x-12=8 165 X-5.7=2.15 166 15 5X-2X=18 167 3.5×2= 4.2 x 168 26×1.5= 2x 169 9.25-X=0.403 170 16.9÷X=0.3 171 1.8-6x=54 172 6.7x-60.3=6.7 173 9+4x=40 174 0.2x-0.4+0.5=3.7 175 9.4x-0.4x=16.2 176 12-4x=20 177 2x+34x=1 178 18x-14x=12 179 23 x-5×14=14 180 12+34x=56 181 22-14x=12 182 x+ 0.5x=6 x 183 (x-140)÷70=4 184 (x-140)÷70=4 185 X+8.3=10.7 186 3x-8=16 187 3x+9=27 188 5.3+7x=7.4 189 3x÷5=4.8 190 X-0.8X=6 191 12x+8x=4.8 192 7(x-2)=49 193 4×8+2x=36 194 (x-2)÷3=7 195 x÷5+9=21 196 (200-x)÷5=30 197 48-27+5x=31 198 91÷x =1.3 199 41-3x=17 200 81÷3x=9