无
*注意事项:
- = + = 2- = + =
+ = - = + = + - + =
①7x-1.2=3.7
②x+2.75=3.86
③x+0.8x=3.6
④1.5x+0.6×3=4.8
⑤x+6x=65.1
⑥4.8+4x=40
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