Предмет: Математика, автор: mumunanan

решите пожалуйста!
-6a-5+4a-7
5(3-2x+4k)
7(b-6)-4(b-3)+2(8-b)
3(7-x)-4(3x+2)=39
тема сложная и я не поняла, если можно то с объяснением

Ответы

Автор ответа: Ученик09876
0
-6а+4а-5-7=0
-2а=7+5
-2а=12
а=-6
Автор ответа: Ученик09876
0
2) 15-10х+20к
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