①4x÷1.2=0.5
②2.7x-0.8x=5.7
③1.3x-4×0.8=3.3
④5x-1.3=0.2
⑤4x+6x=26
⑥24+0.4x=100
①20+x=35 ②3x+6x=81 ③8x-24=80
2x+5.4=18.9 2x-2.8=9.96 (x-0.8)×4=7.2
2x+5=17 3(x-2)=12
① ② ③
⑴6x-9=33 ⑵y+3y=28.4