问题
解答题
解方程.
|
答案
(1)x÷
3 |
8 |
3 |
4 |
x=
3 |
4 |
3 |
8 |
x=
9 |
32 |
(2)2X-0.8=
1 |
4 |
2X-0.8+0.8=
1 |
4 |
2x=1.05,
2x÷2=1.05÷2,
x=0.525;
(3)20%X+35%×20=19,
20%X+7=19,
20%X+7-7=19-7,
20%X=12,
20%X÷20%=12÷20%,
X=60.
解方程.
|
(1)x÷
3 |
8 |
3 |
4 |
x=
3 |
4 |
3 |
8 |
x=
9 |
32 |
(2)2X-0.8=
1 |
4 |
2X-0.8+0.8=
1 |
4 |
2x=1.05,
2x÷2=1.05÷2,
x=0.525;
(3)20%X+35%×20=19,
20%X+7=19,
20%X+7-7=19-7,
20%X=12,
20%X÷20%=12÷20%,
X=60.