题目内容
7.2-0.5x=5.6
:x=
:
.
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(1)7.2-0.5x=5.6,
7.2-0.5x+0.5x=5.6+0.5x,
0.5x+5.6=7.2,
0.5x+5.6-5.6=7.2-5.6,
0.5x=1.6,
x=3.2;
(2)
:x=
:
x=
×
x÷
=
×
÷
x=
7.2-0.5x+0.5x=5.6+0.5x,
0.5x+5.6=7.2,
0.5x+5.6-5.6=7.2-5.6,
0.5x=1.6,
x=3.2;
(2)
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x=
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| 24 |
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