Объяснение:
1) –(6–3+2)= –(5)= –5
2) (2,1+4)–(3,1–7)=6,1–(–3,9)=6,1+3,9=10
3) –(–6,1–2,3)+11,4= –(–8,4)+11,4=8,4+11,4=19,8
4) (10,9–11)+(8+9,4)= –0,1+17,4= 17,3
б)
1) 3(х–у–z)=3x–3y–3z
2) –8(a–2)= –8a+16
3) (c+2)(–3)= –3c–6
4) 4(–9–p)= –36–4p
5) –3(7a+5)= –21a–15
6) 4(–9–p)= –36–4p
Объяснение:
1) –(6–3+2)= –(5)= –5
2) (2,1+4)–(3,1–7)=6,1–(–3,9)=6,1+3,9=10
3) –(–6,1–2,3)+11,4= –(–8,4)+11,4=8,4+11,4=19,8
4) (10,9–11)+(8+9,4)= –0,1+17,4= 17,3
б)
1) 3(х–у–z)=3x–3y–3z
2) –8(a–2)= –8a+16
3) (c+2)(–3)= –3c–6
4) 4(–9–p)= –36–4p
5) –3(7a+5)= –21a–15
6) 4(–9–p)= –36–4p