问题
解答题
解方程.
(1)6x+17=20
(2)0.6x-2.4=18.
答案
(1)6x+17=20,
6x+17-17=20-17,
6x÷6=3÷6,
x=0.5;
(2)0.6x-2.4=18,
0.6x-2.4+2.4=18+2.4,
0.6x÷0.6=20.4÷0.6,
x=34.
解方程.
(1)6x+17=20
(2)0.6x-2.4=18.
(1)6x+17=20,
6x+17-17=20-17,
6x÷6=3÷6,
x=0.5;
(2)0.6x-2.4=18,
0.6x-2.4+2.4=18+2.4,
0.6x÷0.6=20.4÷0.6,
x=34.