0.8x+0.4=3.6怎么解方程?
简算下列各题4.04-4.08÷3.43.36÷21×15解方程(x+0.4)÷0.6=1.5...
简算下列各题 4.04-4.08÷3.4 3.36÷21×15 解方程 (x+0.4)÷0.6=1.5
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4.04-4.08÷3.4
=4.04-(6.8-2.72)÷3.4
=4.04-(6.8÷3.4-2.72÷3.4)
=4.04-(2-0.8)
=4.04-1.2
=2.84
3.36÷21×15
= 3.36÷(3*7)×15
= 3.36÷3÷7×15
=1.12*5*3÷7
=5.6÷7*3
=0.8*3
=2.4
解方程 (x+0.4)÷0.6=1.5
(x+0.4)÷0.6=1.5
x+0.4=1.5*0.6
x+0.4=0.9
x=0.5
=4.04-(6.8-2.72)÷3.4
=4.04-(6.8÷3.4-2.72÷3.4)
=4.04-(2-0.8)
=4.04-1.2
=2.84
3.36÷21×15
= 3.36÷(3*7)×15
= 3.36÷3÷7×15
=1.12*5*3÷7
=5.6÷7*3
=0.8*3
=2.4
解方程 (x+0.4)÷0.6=1.5
(x+0.4)÷0.6=1.5
x+0.4=1.5*0.6
x+0.4=0.9
x=0.5
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