1) 10(n+m)-4(2m+7n) = 10n + 10m − 4(2m + 7n) = 10n + 10m − 8m − 28n = − 18n + 2m
2)11(5c+d)+3(d+c)= 55c + 11d + 3(d + c) = 55c + 11d + 3d + 3c = 58c + 14d
1) 10(n+m)-4(2m+7n) = 10n + 10m − 4(2m + 7n) = 10n + 10m − 8m − 28n = − 18n + 2m
2)11(5c+d)+3(d+c)= 55c + 11d + 3(d + c) = 55c + 11d + 3d + 3c = 58c + 14d