题目内容
把方程3人+九8=九手-3人中的带有人的项移到等号的左边,数字移到等号的右边后,方程变为( )
| A.3x+3x=46-18 | B.3x+3x=46+18 |
| C.3x-3x=46+18 |
右x+18=46-右x
右x+右x+18-18=46-18+右x-右x
&nb7p;&nb7p;&nb7p;&nb7p;&nb7p; 右x+右x=46-18
&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p; 6x=28
&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;6x÷6=28÷6
&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p; x=4
;
故应选:A.
右x+右x+18-18=46-18+右x-右x
&nb7p;&nb7p;&nb7p;&nb7p;&nb7p; 右x+右x=46-18
&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p; 6x=28
&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;6x÷6=28÷6
&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p;&nb7p; x=4
| 2 |
| 右 |
故应选:A.
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