Question

РАСКРЫТЬ СКОБКИ И УПРОСТИТЬ ВЫРАЖЕНИЯ
1. (5n+4n)-(-2)-m=
2. -8(-a-c)+2c=
3. (12a-3b)•4-2b+a=
4. 3(15+2y)-6=
5. 3-(f+1)-4f=
6. 7(3w-5)+(w-3)=

Answer 1

№1

$(5n + 4n) - (-2)-m = 5n + 4n + 2 - m = 9n + 2 - m$

№2

$-8(-a-c) + 2c = 8a + 8c + 2c = 8a + 10c$

№3

$(12a-3b)4 - 2b + a = 48a - 12b - 2b + a = 49a - 14b$

№4

$3(15 + 2y) - 6 = 45 + 6y - 6 = 39 + 6y$

№5

$3 - (f + 1) - 4f = 3 - f - 1 - 4f = 2 - 5f$

№6

$7(3w - 5) + (w - 3) = 21w - 35 + w - 3 = 22w - 38$