问题
解答题
解方程. (1)5.6x-
(2)5x-3×
|
答案
(1)5.6x-
x=4.8,3 5
(5.6-0.6)x=4.8,
5x=4.8,
5x÷5=4.8÷5,
x=0.96;
(2)5x-3×
=7 10
,7 5
5x-2.1=1.4,
5x-2.1+2.1=1.4+2.1,
5x=3.5,
5x÷5=3.5÷5,
x=0.7.
解方程. (1)5.6x-
(2)5x-3×
|
(1)5.6x-
x=4.8,3 5
(5.6-0.6)x=4.8,
5x=4.8,
5x÷5=4.8÷5,
x=0.96;
(2)5x-3×
=7 10
,7 5
5x-2.1=1.4,
5x-2.1+2.1=1.4+2.1,
5x=3.5,
5x÷5=3.5÷5,
x=0.7.