解由x÷4×2=x÷6×2+54得x/8=x/12+54两边乘以48得6x=4x+54*12即2x=54*12解得x=324
x÷4×2=x÷6×2+54x÷4×2-x÷6×2=54(x÷4-x÷6)×2=54x÷4-x÷6=273x÷12-2x÷12=27ⅹ=12x27ⅹ=324
