Question

упростить вырожения : (7n +3m) + (8n -5m) - 10n + 2m

Answer 1

$(7n+3m)+(8n-5m)-10n+2m = 7n+3m+8n-5m-10n+2m$ $= 7n+8n-10n+3m+2m-5m = 15n-10n+5m-5m=5n;$