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
x-=1 +x= -x=
①4:5=x:25
②1+4x=6.7
③3x﹣60%x=4.32
④:3