求未知数x: x÷(1- 2 5 )=3.6 2 3 x- 1 5 x=1 5- 5 8
求未知数x:x÷(1-25)=3.623x-15x=15-58x=103....
求未知数x: x÷(1- 2 5 )=3.6 2 3 x- 1 5 x=1 5- 5 8 x = 10 3 .
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谐嗴諢
推荐于2016-02-09
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x÷(1- )=3.6 x÷ =3.6, X÷ × =3.6× , x=2.16;
x- x=1, x=1, x÷ =1÷ , x=2 ;
5- x = x =5- , x = , x÷ = ÷ , x=2 . |
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