Question

Упростите выражения ​

Answer 1

Пошаговое объяснение:

а)

$15 - (a - 10) + 4a = 15 - a - ( - 10) + 4a = 15 - a + 10 + 4a = 25 - a + 4a = 25 + 3a$

б)

$64 - (b + 39) + 8b = 64 - b - 39 + 8b = 25 - b + 8b = 25 + 7b$

в)

$10c - (104 - 9c) + 500 = 10c - 104 - ( - 9c) + 500 = 10c - 104 + 9c + 500 = 19c - 104 + 500 = 19c + 396$

г)

$196x + (506 + 41x) - 450 = 237x + 506 - 450 = 237x + 56$