问题
解答题
求未知数x. ①4.5x-2x=16 ②
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答案
(1)4.5x-2x=16,
2.5x=16,
2.5x÷2.5=16÷2.5,
x=6.4;
(2)
=2.4 x
,8 15
8x=2.4×15,
8x÷8=36÷8,
x=4.5.
求未知数x. ①4.5x-2x=16 ②
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(1)4.5x-2x=16,
2.5x=16,
2.5x÷2.5=16÷2.5,
x=6.4;
(2)
=2.4 x
,8 15
8x=2.4×15,
8x÷8=36÷8,
x=4.5.