①26×35+5.4÷0.27
②0.6×49+52× -60%
③
④18.25-(6.45- )
⑤( )×7÷15
⑥(5.6- ×19.2)÷
①(+)×24
②
③×+×62.5%
④1-(-)
⑤÷+×7
⑥36××
①x﹣ =0.25
② x﹣ =120
③ =50%
①1.5x-2.8=4.7
③12: =