求未知数X: X-1.8=5.4 X
求未知数X:X-1.8=5.4X-0.5=6X+54X=2716....
求未知数X: X-1.8=5.4 X-0.5=6 X+54X=2716.
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情素荡3260
推荐于2016-01-25
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(1)X-1.8=5.4,
X-1.8+1.8=5.4+1.8,
X=7.2;
(2)X-0.5=6,
X-0.5+0.5=6+0.5,
X=6.5;
(3)X+
X=
,
X=
,
X
÷=
÷,
X=
.
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