问题
解答题
解方程. (1)8X+1.5×3=16.5 (2)
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答案
(1)8X+1.5×3=16.5,
8X+4.5=16.5,
8X+4.5-4.5=16.5-4.5,
8x=12,
8x÷8=12÷8,
x=1.5;
(2)
=4 x
:2 3
,2 5
=4 x
,5 3
5x=12,
5x÷5=12÷5,
x=2.4.
解方程. (1)8X+1.5×3=16.5 (2)
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(1)8X+1.5×3=16.5,
8X+4.5=16.5,
8X+4.5-4.5=16.5-4.5,
8x=12,
8x÷8=12÷8,
x=1.5;
(2)
=4 x
:2 3
,2 5
=4 x
,5 3
5x=12,
5x÷5=12÷5,
x=2.4.