①x÷2.4=4
②210+x=640
③0.7x=0.56
④x÷4=160
⑤x+0.35=7.25
⑥2x=10.4
5y-y=4.8
x+3.67=8 2.4x=122.5x÷4=62.5 0.6x-0.4x=1
x+=91
x-=8.9
x=5.1
÷x=63