145.146-15
145.145+130
= 145.(145+1)-15
= 145.145+145-15
= 130
130
=1
Đáp án:
`=1`
Giải thích các bước giải:
`(145.146-15)/(145.145+130)`
`=(145.(145+1)-15)/(145.145+130)`
`=(145.145+145-15)/(145.145+130)`
`=130/130`
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