x减28%x等于32点24-搜答案-智慧作业帮

这样的题以后就别问了令t=x平方加xt（t-2）=24t^2-2t-24=0（t-6）（t+4）=0t1=6.t2=-4x^2+x=6或者x^2+x=-4（无解△＜0）（x+3）（x-2）=0x1=-

9.2X-X=49.2(9.2-1)X=49.28.2X=49.2X=49.2÷8.2X=6

x-0.85x=30.15x=3x=20再问：7x5x等于120怎么算？4x减1点2等于74怎么算？3点8x减x等于0点56怎么算？再答：7x*5x=12035x^2=120x^2=4x=±24x-1

16.10.28

7.6x-4x=3.63.6x=3.6x=1

8点6减x等于6点3解

8.6-x=6.3x=8.6-6.3=2.3

9.5X-5X=0.94.5X=0.9X=0.9÷4.5X=0.2

7.5x=(46-x)×5.97.5x=271.4-5.9x7.5x+5.9x=271.413.4x=271.4x=271.4÷13.4x=67分之1357

0.7x-0.6x=0.010.1x=0.01x=0.1

x/5+x=326x/5=32x=80/32x/5-x/4=243x/20=24x=16030%x=45x=4500/30=150X+12%X=2.241.12x=2.24x=2

X减0点76X等于0点96X-0.76X=0.960.24X=0.96X=0.96÷0.24X=4

0.8x+0.7x=0.150.15x=0.15x=1

x-24.7=39.6方程两边同时加上24.7x-24.7+24.7=39.6+24.7x=64.3再问：x+4.5=23.52用解方程再答：两边同时减去4.5x+4.5-4.5=23.42-4.5x

x-0.8x=60(1-0.8)x=600.2x=60x=60÷0.2x=300

x=4

x减7点9等于2点6解

X-7.9=2.6X=2.6+7.9X=10.5

11

2点5x等于42减x

2.5x=42-x2.5x+x=423.5x=42x=42÷3.5x=12

5点8减x等于3点7解

再答：望采纳