问题
解答题
解方程.
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答案
(1)2.1+4x=8.5,
2.1+4x-2.1=8.5-2.1,
4x=6.4,
4x÷4=6.4÷4,
x=1.6;
(2)3x+2x=2.5,
5x=2.5,
5x÷5=2.5÷5,
x=0.5.
解方程.
|
(1)2.1+4x=8.5,
2.1+4x-2.1=8.5-2.1,
4x=6.4,
4x÷4=6.4÷4,
x=1.6;
(2)3x+2x=2.5,
5x=2.5,
5x÷5=2.5÷5,
x=0.5.