x-0.4x=30咋解,五年级咋没学捏?

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x-0.4x=30咋解,五年级咋没学捏?x-0.4x=30咋解,五年级咋没学捏?x-0.4x=30咋解,五年级咋没学捏?x-0.4x=30(1-0.4)x=300.6x=30x=30÷0.6x=50

x-0.4x=30咋解,五年级咋没学捏?
x-0.4x=30咋解,五年级咋没学捏?

x-0.4x=30咋解,五年级咋没学捏?
x - 0.4x = 30
(1 - 0.4)x = 30
0.6x = 30
x = 30÷0.6
x = 50