问题
解答题
解方程.
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答案
(1)x-16.2=1.89,
x-16.2+16.2=1.89+16.2,
x=18.09;
(2)2.5x=1,
2.5x÷2.5=1÷2.5,
x=0.4;
(3)x÷1.2=0.5,
x÷1.2×1.2=0.5×1.2,
x=0.6.
解方程.
|
(1)x-16.2=1.89,
x-16.2+16.2=1.89+16.2,
x=18.09;
(2)2.5x=1,
2.5x÷2.5=1÷2.5,
x=0.4;
(3)x÷1.2=0.5,
x÷1.2×1.2=0.5×1.2,
x=0.6.