题目内容
解方程(或比例)
(1)3.2x-4×3=52 (2)x:
=3:4.
(1)3.2x-4×3=52 (2)x:
| 1 |
| 2 |
(1)3.2x-4×3=52,
3.2x-12+12=52+12,
3.2x÷3.2=64÷3.2,
x=20;
(2)x:
=3:4,
4x=
×3,
4x÷4=1.5÷4,
x=0.375.
3.2x-12+12=52+12,
3.2x÷3.2=64÷3.2,
x=20;
(2)x:
| 1 |
| 2 |
4x=
| 1 |
| 2 |
4x÷4=1.5÷4,
x=0.375.
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