Question

-41(2-xy-y)
71(a+b-c)
-(-20+a-3b)
22(b-100-4a)
-33(2x-xy+3y)
18(-a+b+c)
-(65+a-98b)
Срочно! надо раскрыть скобки

Answer 1

$- 41(2 - xy - y) = - 82 + 41xy + 41y \\ 71(a + b + c )= 71a + 71b + 71c \\ - ( - 20 + a - 3b) = 20 - a + 3b \\ 22(b - 100 - 4a) = 22b - 2200 - 88a \\ - 33(2x - xy + 3y) = - 66x + 33xy - 99y \\ 18( - a + b + c) = - 18a + 18b + 18c \\ - (65 + a - 98b) = - 65 - a + 98b$