问题
解答题
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答案
(1)9×1.8-122x=3.6,
16.2-122x=3.6,
16.2-122x+122x=3.6+122x,
16.2-3.6=3.6+122x-3.6,
12.6÷122=122x÷122
x=
; 63 610
(2)
=x:1.5,8.4 0.35
0.35x=8.4×1.5,
0.35x÷0.35=12.6÷3.5,
x=36;
(3)
x+1 3
x=5 6
×2 3
,1 4
x=7 6
,1 6
x×7 6
=6 7
×1 6
,6 7
x=
.1 7
(4)2(x-4)=4.8,
2(x-4)÷2=4.8÷2,
x-4=2.4,
x-4+4=2.4+4,
x=6.4.