3x-4*6.5=7.6 12.5x+x=108 3(x-2.1)=8.4 12*6+8x=120 解方程


解枣陵大缺:凳仿戚3x-4*6.5=7.6 3X=33.6 X=11.2
12.5x+x=108 13.5X=108 X=8
3(x-2.1)=8.4 3X=14.7 X=4.9
12*6+8x=120 8X=48 X=6
3x-4*6.5=7.6 3x-23=7.6 3x=30.6 x=10.2

12.5x+x=108 13.5x=粗散108 x=念誉108÷13.5 x=8

3(x-2.1)=8.4 x-2.1=2.8 x=2.8+2.1 x=4.9

12*6+8x=120 72+8x=120 8x=120-72 8x=48 x=仔凳段48÷8 x=6
3x-4*6.5=7.6
3x-26=7.6
3x=26+7.6
3x=33.6
x=33.6/3
x=11.2

12.5x+x=108
2.25x=108
x=108/启搭2.25
x=48

3(x-2.1)=8.4
x-2.1=8.4/卜旁敬型慎3
x-2.1=2.8
x=2.1+2.8
x=4.9

12*6+8x=120
72+8x=120
8x=120-72
8x=48
x=48/8
x=6
(1)X=11.2
(2)X=8
(3)X=4.9
(4)X=6
3x-4*6.5=7.6
3x-26=7.6
3x=7.6+26
3x=33.6
x=33.6÷3
x=11.2

12.5x+x=108
13.5x=108
x=108÷13.5
x=8

3(x-2.1)=8.4
x-2.1=8.4÷3
x-2.1=2.8
x=2.8+2.1
x=4.9

12*6+8x=120
72+8x=120
8x=120-72
8x=48
x=48÷8
x=6