
1个回答
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(1)3.2x-4×3=52,
3.2x-12=52,
3.2x-12+12=52+12,
3.2x=64,
3.2x÷3.2=64÷3.2,
x=20;
(2)
:
=x:10,
x=
×10,
x=
,
x×8=
×8,
x=20.
3.2x-12=52,
3.2x-12+12=52+12,
3.2x=64,
3.2x÷3.2=64÷3.2,
x=20;
(2)
1 |
4 |
1 |
8 |
1 |
8 |
1 |
4 |
1 |
8 |
5 |
2 |
1 |
8 |
5 |
2 |
x=20.
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