4(m+n)+(m+n) упростите
4(m+n)+(m+n) =4m+4n+m+n=5m+5n=5(m+n)
4(m + n) + (m + n) = 4m + 4n + m + n = 5m + 5n = 5(m + n)
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4(m+n)+(m+n) =4m+4n+m+n=5m+5n=5(m+n)
4(m + n) + (m + n) = 4m + 4n + m + n = 5m + 5n = 5(m + n)