问题
解答题
解方程. ①60%+
②16x-6.4x=36 ③
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答案
①60%+
x=1.2,1 3
0.6+
x-0.6=1.2-0.6,1 3
x=0.6,1 3
x×3=0.6×3,1 3
x=1.8;
②16x-6.4x=36
(16-6.4)x=36,
9.6x=36,
9.6x÷9.6=36÷9.6,
x=3.75;
③
:6=6 5
,(X-1) 5
6×(x-1)=
×5,6 5
6×(x-1)÷6=6÷6,
x-1+1=1+1,
x=2.