问题
解答题
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答案
(1)x-0.8x-1.6=1.4,
0.2x-1.6=1.4,
0.2x-1.6+1.6=1.4+1.6,
0.2x=3,
0.2x÷0.2=3÷0.2,
x=15;
(2)
:2 3
=3 4
,x 12
x=3 4
×12,2 3
x=8,3 4
x÷3 4
=8÷3 4
,3 4
x=
.32 3
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(1)x-0.8x-1.6=1.4,
0.2x-1.6=1.4,
0.2x-1.6+1.6=1.4+1.6,
0.2x=3,
0.2x÷0.2=3÷0.2,
x=15;
(2)
:2 3
=3 4
,x 12
x=3 4
×12,2 3
x=8,3 4
x÷3 4
=8÷3 4
,3 4
x=
.32 3