Раскройте скобки: 1) -12(5/6 a - 1/4 b + 7/24 c - 1/12); 2) (16a + 8b - 5/9 c - 4/9 d) * (-9/32 n); 3) -4/15 bc(-45a

Question

Раскройте скобки:
1) -12(5/6 a - 1/4 b + 7/24 c - 1/12);
2) (16a + 8b - 5/9 c - 4/9 d) * (-9/32 n);
3) -4/15 bc(-45a - 30d + 3 3/4m - 3/8);
4) (-3,6ab + 20a - b - 100) * (-5xy).

Accepted Answer

1) -12(5/6 a - 1/4 b + 7/24 c - 1/12)=-10a + 3b - 3 1/2 c + 1;
2) (16a + 8b - 5/9 c - 4/9 d) * (-9/32 n)=-4 1/2an - 2 1/4 bn + 5/32 cn + 1/8 dn;
3) -4/15bc(-45a - 30d + 3 3/4m - 3/8)=12abc + 8dbc - mbc +1/10bc;
4) (-3,6ab + 20a - b - 100) * (-5xy)=18abху - 100aху + 5bху + 500xy.

<p>Раскройте скобки: <br />1) -12(5/6 a - 1/4 b + 7/24 c - 1/12); <br />2) (16a + 8b - 5/9 c - 4/9 d) * (-9/32 n); <br />3) -4/15 bc(-45a - 30d + 3 3/4m - 3/8); <br />4) (-3,6ab + 20a - b - 100) * (-5xy).</p>

Ответы2