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m+255n-31k+861
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m+255n-31k+861
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410n-123m+861-31\left(k-4m+5n\right)
Use the distributive property to multiply 41 by 10n-3m+21.
410n-123m+861-31k+124m-155n
Use the distributive property to multiply -31 by k-4m+5n.
410n+m+861-31k-155n
Combine -123m and 124m to get m.
255n+m+861-31k
Combine 410n and -155n to get 255n.
410n-123m+861-31\left(k-4m+5n\right)
Use the distributive property to multiply 41 by 10n-3m+21.
410n-123m+861-31k+124m-155n
Use the distributive property to multiply -31 by k-4m+5n.
410n+m+861-31k-155n
Combine -123m and 124m to get m.
255n+m+861-31k
Combine 410n and -155n to get 255n.
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