a}-40 • (x + y) + (x - 2y) -17x
b) 4(3x+4b+5c)+20c — x
c) x - (b -c) + (m +n) + 3x - 5b
d) b - (4 -2b) + (3b - 1) + 2a + 5a
e)2,3(b - 8) - (c - 3,4) - 7c + 8b
f)3(6 - 5x) + 17a + 14x + 4a - 10
ДАМ 40 БАЛЛОВ!!!!

a) \(-40 \(x + y) + (x - 2y) - 17x\)

\(-40x - 40y + x - 2y - 17x = -56x - 42y\)

b) \(4(3x+4b+5c)+20c - x\)

\(12x + 16b + 20c + 20c - x = 11x + 16b + 40c\)

c) \(x - (b -c) + (m +n) + 3x - 5b\)

\(x - b + c + m + n + 3x - 5b = 4x - 6b + c + m + n\)

d) \(b - (4 -2b) + (3b - 1) + 2a + 5a\)

\(b - 4 + 2b + 3b - 1 + 2a + 5a = 10a + 6b - 5\)

e) \(2.3(b - 8) - (c - 3.4) - 7c + 8b\)

\(2.3b - 18 - c + 3.4 - 7c + 8b = 10.3b - 25 - 8c\)

f) \(3(6 - 5x) + 17a + 14x + 4a - 10\)

\(18 - 15x + 17a + 14x + 4a - 10 = 31a - x + 8\)