解方程 2.7x+3=97.5 0.95÷0.4x=1.9 6.8+x=24.5 6x-4x7.5=24 4.8x-8=25.6 12x-6x5=210 9x-4x=74.6180（x÷4）=74

2.7x+3=97.5
2.7x=94.5
x=35
0.95÷0.4x=1.9
0.4x=0.5
x=1.25

6.8+x=24.5
x=24.5-6.8
x=17.7
6x-4x7.5=24
6x-30=24
6x=54
x=9
4.8x-8=25.6
4.8x=33.6
x=7
12x-6x5=210
12x-30=210
12x=240
x=20

9x-4x=74.6
5x=74.6
x=14.92
180-（x÷4）=74
x÷4=106
x=424

2.7x+3=97.5
2.7x=97.5-3
2.7x=94.5
x=35

0.95÷0.4x=1.9
1.9*0.4x=0.95
0.4x=0.5
x=1.25

6.8+x=24.5
x=24.5-6.8
x=17.7

6x-4x7.5=24
6x=24-30
6x=-6
x=-1

4.8x-8=25.6
4.8x=25.6+8
4.8x=33.6
x=7

12x-6x5=210
12x=210+30
12x=240
x=20

180(x÷4)=74
180x÷4=74
45x=74
x=74/45

9x-4x=74.6
5x=74.6
x=14.92

2.7x+3=97.5 2.7x=97.5-3x=94.5÷2.7x=350.95÷0.4x=1.90.4x=0.95÷1.9x=0.5÷0.4x=1.256.8+x=24.5 x=24.5-6.8x=17.76x-4x7.5=24 x=54÷6x=94.8x-8=25.64.8x=25.6+8x=33.6÷4.8x= 712x-6x5=21012x=210+30x=240÷12x=...