Предмет: Математика, автор: langenasta

решите номера 180 и 181 пожалуйста

Приложения:

Lora666:  их все надо делать? 
langenasta: да
langenasta: номера 180,181
langenasta: и ве
langenasta: там просто упростить а ответ там не получится его не радо

Ответы

Автор ответа: Lora666
8
№ 180. 
а) 4*(5 - у) - 30 = 20 - 4у - 30 = -4у - 10. 
б) -8*(9 + х) + 50 = -72 -8х + 50 = -22 -8х 
в) (-12)*( -а - 2) - 10= 12а + 24 - 10 = 12а - 12. 
г) -19*(2 - х) + 20 = -38 + 19х + 20 = 18 + 19х
д) 16*(7-а) - 90 = 112 - 16а - 90 = 22 - 16а 
е) -15*( х + 4) + 60 = -15х - 60 + 60 = -15х. 

Lora666: № 181.
Lora666: 20+3(х- 15) = 20 + 3х - 45 = -25 + 3х
Lora666: 16 - 4( 2 + а)= 16 - 8 - 4а = 8 - 4а 
Lora666: -35 -12( б-3)= -35 - 12б + 36 = 1 - 12б 
langenasta: спасибо тебе большое ))))
Lora666: -18 + 8( 4 - х ) = -18 + 32 - 8х = 14 - 8х 
Lora666: 42 - 6(7 + у) = 42 - 42 - 6х = -6х
Lora666: 29 - 3( т - 8) 29 - 3т + 24 = 53 - 3т 
Lora666: Пожалуйста, надеюсь всё правильно) 
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