①0.6+x=3.8
②6.6x-3.4x=16
③2x-2×0.6=10.8
④x÷25=12
②1.2x-0.8x=4.8
※③x÷3.5=14
④5.4x+x=12.8
⑤3.2x+1.5×2=12.6
⑥7x-7.5=6.5