问题
解答题
解方程. (1)x+5%=0.42÷10% (2)
|
答案
(1)x+5%=0.42÷10%
x+5%=4.2
x+5%-5%=4.2-5%
x=4.15;
(2)
:x=15 8
:(5-21 2
)3 5
1
x=1 2
×25 8 2 5
1
x÷11 2
=1 2
÷13 2 1 2
x=1.
解方程. (1)x+5%=0.42÷10% (2)
|
(1)x+5%=0.42÷10%
x+5%=4.2
x+5%-5%=4.2-5%
x=4.15;
(2)
:x=15 8
:(5-21 2
)3 5
1
x=1 2
×25 8 2 5
1
x÷11 2
=1 2
÷13 2 1 2
x=1.