(1)解方程,请让人容易看清楚5.6/70%x=56%4x（x+2）X2=16(2)脱式计算,能简算的要简算.（“/”代表分数线12/17X1/8-4/17X0.12513/31X17/25+17/31X12/252/3x3/4-2/3除4/31/5X370%+630%X20%+440%5/16X4/9+14/9除16/5-10/9X5/16

Question

(1)解方程,请让人容易看清楚 5.6/70%x=56% 4x（x+2）X2=16
(2)脱式计算,能简算的要简算.（“/”代表分数线
12/17X1/8-4/17X0.125
13/31X17/25+17/31X12/25
2/3x3/4-2/3除4/3
1/5X370%+630%X20%+440%
5/16X4/9+14/9除16/5-10/9X5/16

Answer 1

(1)解方程,请让人容易看清楚
5.6/70%x=56%
70%x=5.6/56%
0.7x=10
x=100/7
4x（x+2）X2=16
x+2=2
x=0
(2)脱式计算,能简算的要简算.（“/”代表分数线
12/17X1/8-4/17X0.125
=(12-4)/17×1/8
=8/17×8
=1/17
13/31X17/25+17/31X12/25
=（13/25+12/25）×17/31
=1×17/31
=17/31
2/3x3/4-2/3除4/3
=2/3×3/4-2/3×3/4
=0
1/5X370%+630%X20%+440%
=0.2×（370%+630%）+4.4
=0.2×10+4.4
=2+4.4
=6.4
5/16X4/9+14/9除16/5-10/9X5/16
=5/16×（4/9+14/9-10/9）
=5/16×8/9
=5/18