问题
解答题
解方程.
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答案
(1)X-34=200,
X-34+24=200+34,
X=234;
(2)6X+7X=650,
13X=650,
13X÷13=650÷13,
X=50;
(3)14×70-5X=800,
980-5X=800,
980-5X+5X=800+5X,
980=800+5X,
980-800=800+5X-800,
5X=180,
5X÷5=180÷5,
X=36.
解方程.
|
(1)X-34=200,
X-34+24=200+34,
X=234;
(2)6X+7X=650,
13X=650,
13X÷13=650÷13,
X=50;
(3)14×70-5X=800,
980-5X=800,
980-5X+5X=800+5X,
980=800+5X,
980-800=800+5X-800,
5X=180,
5X÷5=180÷5,
X=36.