1) 18×(2y+3)+2×(y+6)
36y + 54 + 2y + 12
38y + 66
2(19y + 33)
2) 4×(7x+1)+2(x+8)
28x + 4 + 2x + 16
30x + 20
10(3x + 2)
3) (3b+1)×7+(4x-1)×2
21b + 7 + 8x - 2
7 (3b + 1) + 2 (4x - 1)
или
21b - 5 + 8x
4) 11×(13x+4)+(4x-3)×5
143х + 44х + 20х - 15
207х - 15
(17b+5)×5-b-10
85b + 25 - b - 10
84b - 15