问题
解答题
解方程.
6.4x=3.2
4.8x+0.6=5.4
18x+2x=60.
答案
(1)6.4x=3.2
6.4x÷6.4=3.2÷6.4
x=0.5;
(2)4.8x+0.6=5.4
4.8x+0.6-0.6=5.4-0.6
4.8x÷4.8=4.8÷4.8
x=1;
(3)18x+2x=60
20x÷20=60÷20
x=3.
解方程.
6.4x=3.2
4.8x+0.6=5.4
18x+2x=60.
(1)6.4x=3.2
6.4x÷6.4=3.2÷6.4
x=0.5;
(2)4.8x+0.6=5.4
4.8x+0.6-0.6=5.4-0.6
4.8x÷4.8=4.8÷4.8
x=1;
(3)18x+2x=60
20x÷20=60÷20
x=3.