Question

а) (a - b) - (c - d)
б) (a - b) + (c - d)
в) x - (a b) + (c - d)
г) 10 - (a - b) - c + d
раскройте скобку ​

Answer 1

Ответ:

$(a - b) - (c - d) = a - b - c + d$

$(a - b) +( c - d) = a - b + c - d$

$x - (a - b) + (c - d) = x - a + b + c - d$

$10 - (a - b) - c + d = 10 - a + b - c + d$