5x+35=12x-42 8x-4=-3x-21 4-4x=3x-3 12x+7=14-4x 288x+144=15x
1个回答

5x+35=12x-42

12x-5x=35+42

7x=77

x=11

8x-4=-3x-21

8x+3x=4-21

11x=-17

x=-17/11

4-4x=3x-3

3x+4x=4+3

7x=7

x=1

12x+7=14-4x

12x+4x=14-7

16x=7

x=7/16

288x+144=15x

288x-15x=-144

273x=-144

x=-48/91

(x+1/0.3)-(2x-1/0.7)=0

x+10/3-2x+10/7=0

-x+100/21=0

x=100/21

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