Предмет: Алгебра, автор: polina24102001

Помогите пожалуйста со всеми извините что фотография

Приложения:

Ответы

Автор ответа: bicheva2002
22
1(4)
3а+1/а+б - 2а+3/а+б = 3а+1-2а+3/а+б = а+4/а+б
2(3)
х-бр/р - х+бр/р = х-бр-х+бр/р =  0/р = 0
3(4)
с+qy/q - c-2qy/q = c+qy-c-2qy/q = qy/q
4(3)
px-3q/x-y + py-3q/y-x = px-3q/x-y - py-3q/x-y = px-3q-py+3q/x-y = px-py/x-y = р(х-у)/х-у = р
4(3)
2cх+б/2с-3 + 3х+б/3-2с = 2сх+б/2с-3 - 3х+б/2с-3 = 2сх+б-3х-б/2с-3 = 2сх-3х/2с-3 = х(2с-3)/2с-3 = х
5(4)
х/2m-n + y/n-2m = x/2m-n - y/2m-n = x-y/2m-n
 я уверена что это правильно

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