问题
解答题
解下列方程 X-1.24=0.8 15X=0.6
X÷12=4. |
答案
(1)x-1.24=0.8,
x-1.24+1.24=0.8+1.24,
x=2.04;
(2)15x=0.6,
15x÷15=0.6÷15,
x=0.04;
(3)
+x=1,3 5
+x-3 5
=1-3 5
,3 5
x=
;2 5
(4)x÷12=4,
x÷12×12=4×12,
x=48.
解下列方程 X-1.24=0.8 15X=0.6
X÷12=4. |
(1)x-1.24=0.8,
x-1.24+1.24=0.8+1.24,
x=2.04;
(2)15x=0.6,
15x÷15=0.6÷15,
x=0.04;
(3)
+x=1,3 5
+x-3 5
=1-3 5
,3 5
x=
;2 5
(4)x÷12=4,
x÷12×12=4×12,
x=48.