问题
解答题
解方程.
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答案
①X+0.3=1.8,
x+0.3-0.3=1.8-0.3,
x=1.5;
②4X-3×9=29,
4x-27+27=29+27,
4x÷4=56÷4,
x=14;
③13(X+5)=169,
13(X+5)÷13=169÷13,
x+5-5=13-5,
x=8;
④X+0.36X=2.72,
1.36x=2.72,
1.36x÷1.36=2.72÷1.36,
x=2.
解方程.
|
①X+0.3=1.8,
x+0.3-0.3=1.8-0.3,
x=1.5;
②4X-3×9=29,
4x-27+27=29+27,
4x÷4=56÷4,
x=14;
③13(X+5)=169,
13(X+5)÷13=169÷13,
x+5-5=13-5,
x=8;
④X+0.36X=2.72,
1.36x=2.72,
1.36x÷1.36=2.72÷1.36,
x=2.