
解方程(1)5x?5×13=0.8(2)x8?&nbs
1个回答
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(1)5x-5×
=0.8,
5x-
=0.8,
5x-
+
=
+
,
5x=
,
5x÷5=
÷5,
x=
;
(2)
-4.5+5.5=10,
+1=10,
+1-1=10-1,
=9,
×8=9×8,
x=72.
1 |
3 |
5x-
5 |
3 |
5x-
5 |
3 |
5 |
3 |
4 |
5 |
5 |
3 |
5x=
37 |
15 |
5x÷5=
37 |
15 |
x=
37 |
75 |
(2)
x |
8 |
x |
8 |
x |
8 |
x |
8 |
x |
8 |
x=72.
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