问题
解答题
解方程. ①8x+12=36②
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答案
(1)8x+12=36,
8x+12-12=36-12,
8x÷8=24÷8,
x=3;
(2)
:1 2
=1 5
:x,1 4
x=1 2
×1 5
,1 4
x×2=1 2
×2,1 20
x=
.1 10
解方程. ①8x+12=36②
|
(1)8x+12=36,
8x+12-12=36-12,
8x÷8=24÷8,
x=3;
(2)
:1 2
=1 5
:x,1 4
x=1 2
×1 5
,1 4
x×2=1 2
×2,1 20
x=
.1 10