解方程 x+3.2=6.4 x-1.8=4 x-2=15 1.6x=6.4 x/7=0.3 x/3=2.1

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解方程 x+3.2=6.4 x-1.8=4 x-2=15 1.6x=6.4 x/7=0.3 x/3=2.1
解方程 x+3.2=6.4 x-1.8=4 x-2=15 1.6x=6.4 x/7=0.3 x/3=2.1

解方程 x+3.2=6.4 x-1.8=4 x-2=15 1.6x=6.4 x/7=0.3 x/3=2.1
(1)x+3.2=6.4
x=3.2
(2)x-1.8=4
x=5.8
(3)x-2=15
x=17
(4)1.6x=6.4
x=4
(5)x/7=0.3
x=2.1
(6)x/3=2.1
x=6.3