
1个回答
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(1)4x+3×0.7=6.5,
4x+2.1=6.5,
4x+2.1-2.1=6.5-2.1,
4x=4.4,
4x÷4=4.4÷4,
x=1.1;
(2)x:8=
:1
,
1
x=8×
,
1
x=6,
1
x×
=6×
,
x=5.
4x+2.1=6.5,
4x+2.1-2.1=6.5-2.1,
4x=4.4,
4x÷4=4.4÷4,
x=1.1;
(2)x:8=
3 |
4 |
1 |
5 |
1
1 |
5 |
3 |
4 |
1
1 |
5 |
1
1 |
5 |
5 |
6 |
5 |
6 |
x=5.
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