2x减7点5等于8点5解-搜答案-智慧作业帮

解由题意得43.2-36.5/X=0.543.2-0.5=36.5/X42.7=36.5/XX=0.85

x÷2.07×0.5=0x=0÷0.5×2.07x=0

0.77x=0.82×7-4.20.77x=1.54x=1.54÷0.77x=2

1.3x-3.2=13.71.3x=13.7+3.21.3x=16.9x=16.9/1.3x=13

0点4分之（3x减7）减0点5分之（x减0点5）减0点2分之x等于10即2(3x-7)/5-2×(x-1/2)-5x=10∴2×(3x-7)-10×(x-1/2)-25x=50∴6x-14-10x+5

16.10.28

8点6减x等于6点3解

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

解为：x=0再问：过程再答：4x+0.4X=04.4x=0x=0÷4.4x=0

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+2.5x=0.7（1+2.5)x=0.73.5x=0.7x＝0.2

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

x减7点9等于2点6解

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

2.8x-0.6=52.8x=5.6x=5.6/2.8x=2

2点5x等于42减x

2.5x=42-x2.5x+x=423.5x=42x=42÷3.5x=12

5X一2X等于7点5

3x=7.5x=1.5再答：x=2.5

5点8减x等于3点7解

再答：望采纳