题目内容
求未知数x.
| ①x×123=1845 | ②x+0.05=3.528 | ③x-3.6=7.89 | ④8064÷x=144. |
①x×123=1845,
x×123÷123=1845÷123,
x=15;
②x+0.05=3.528,
x+0.05-0.05=3.528-0.05,
x=3.478;
③x-3.6=7.89,
x-3.6+3.6=7.89+3.6,
x=11.49;
④8064÷x=144,
8064÷x×x=144×x,
144x÷144=8064÷144,
x=56.
x×123÷123=1845÷123,
x=15;
②x+0.05=3.528,
x+0.05-0.05=3.528-0.05,
x=3.478;
③x-3.6=7.89,
x-3.6+3.6=7.89+3.6,
x=11.49;
④8064÷x=144,
8064÷x×x=144×x,
144x÷144=8064÷144,
x=56.
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