解方程x:1.2=3:4
解方程x:1.2=3:4x-320=8.53.2X=0.5....
解方程x:1.2=3:4 x- 3 20 =8.5 3.2 X =0.5.
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抹茶会飞100
2014-10-16
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(1)x:1.2=3:4, 4x=1.2×3, 4x=3.6, 4x÷4=3.6÷4, x=0.9;
(2)x- =8.5, x- + =8.5+ , x=8.65;
(3) =0.5, ×x=0.5×x, 3.2=0.5x, 3.2÷0.5=0.5x÷0.5, x=6.4. |
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