问题
解答题
解方程. ①
②4.2X+2.7X=13.8. |
答案
(1)
:X=0.32:4.8,1 5
0.32x=
×4.8,1 5
0.32x=0.96,
0.32x÷0.32=0.96÷0.32,
x=3;
(2)4.2X+2.7X=13.8,
6.9x=13.8,
6.9x÷6.9=13.8÷6.9,
x=2.
解方程. ①
②4.2X+2.7X=13.8. |
(1)
:X=0.32:4.8,1 5
0.32x=
×4.8,1 5
0.32x=0.96,
0.32x÷0.32=0.96÷0.32,
x=3;
(2)4.2X+2.7X=13.8,
6.9x=13.8,
6.9x÷6.9=13.8÷6.9,
x=2.