How to solve N+15=35-N?
回答 (3)
2016-06-22 9:57 am
N + 15 = 35 - N
N + 15 + N - 15 = 35 - N + N - 15
2N = 20
2N/2 = 20/2
N = 10
N + 15 + N - 15 = 35 - N + N - 15
2N = 20
2N/2 = 20/2
N = 10
2016-06-22 10:10 am
N + 15 = 35 - N
N = 35 - N - 15
N = 20 - N
N + N = 20
2N = 20
N = 20/2
N = 10
N = 35 - N - 15
N = 20 - N
N + N = 20
2N = 20
N = 20/2
N = 10
2016-06-22 10:02 am
N+15=35-N
2N = 50
N = 25
2N = 50
N = 25
收錄日期: 2021-04-18 15:09:22
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