问题
解答题
(1)1.6x+8=12.48 (2)1.2:x=0.25:
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答案
(1)1.6x+8=12.48,
1.6x+8-8=12.48-8,
1.6x÷1.6=4.48÷1.6,
x=2.8;
(2)1.2:x=0.25:
,5 6
0.25x=1.2×
,5 6
0.25x÷0.25=1÷0.25,
x=4.
(1)1.6x+8=12.48 (2)1.2:x=0.25:
|
(1)1.6x+8=12.48,
1.6x+8-8=12.48-8,
1.6x÷1.6=4.48÷1.6,
x=2.8;
(2)1.2:x=0.25:
,5 6
0.25x=1.2×
,5 6
0.25x÷0.25=1÷0.25,
x=4.