解下列方程
6Χ+3.6=12 8Χ+25=57 0.8+3.6Χ=1.52 3.5-40%Χ=2.7
Χ=18 Χ= Χ÷14= Χ-Χ=
Χ-Χ= 1-Χ= 8Χ+= :Χ=
×Χ= Χ÷= Χ+Χ= Χ-Χ=
Χ = 15 Χ÷ = Χ÷=18 Χ+Χ=15
Χ×(1-)=3.6 -Χ= Χ+= 7Χ-=
Χ+2Χ= 5Χ-= Χ-20%Χ=1 Χ+Χ=
×(+)= -Χ= Χ÷= 7.2-2Χ=3.8
(6+3Χ)÷2=18 (Χ-0.4):8=3:2 6Χ+2Χ=56 12Χ÷3=16
8.8+4Χ=40 3Χ-0.5Χ=5 0.24Χ-1.8=4.2 3Χ+5×0.3=4.5