问题
解答题
解方程. (1)4x+18=50 (2)
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答案
(1)4x+18=50,
4x+18-18=50-18,
4x÷4=32÷4,
x=8;
(2)
:1 4
=x:1 8 1 10
x=1 8
×1 4
,1 10
x8=1 8
×8,1 40
x=
;1 5
(3)
=17 3
,51 X
17x=3×51,
17x÷17=153÷17,
x=9;
(4)
=0.5,3.2 X
×x=0.5×x,3.2 X
0.5x÷0.5=3.2÷0.5,
x=6.4.