问题
解答题
解方程
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答案
(1)0.25×3+25%x=4.75,
0.75+25%x=4.75,
0.75+25%x-0.75=4.75-0.75,
25%x=4,
25%x÷25%=4÷25%,
x=16;
(2)
x=2 3
,5 12
x÷2 3
=2 3
÷5 12
,2 3
x=
;5 8
(3)4x-1.6x=48,
2.4x=48,
2.4x÷2.4=48÷2.4,
x=20.