А) 2(4–9d)–(2d+3)=–8(4–d)+3(1+2d8 - 18d - 2d - 3 = -32 + 8d + 3 + 65 - 20d = -32 + 145 + 32 = 20d + 1437 = 34d = 37/34
б) 5(2–3b)–4(6+2b)=28–(b–210 - 15b - 24 - 8b = 28 - b + -14 - 23b = 26 - -14 - 26 = b - 23b = 12/2b = 6/11
в) –2(3x+4)+(6x+8)=4(5x–2–(5x+8)-6x - 8 + 6x + 8 = 20x - 8 - 20 - 5x - 0 = -5x - 35x = -3x = -36/5
г) 8(4–3y)–(7–2y)=–(6+3y)+8(y–232 - 24y - 7 + 2y = -6 - 3y + 8y - 125 - 22y = -6 + 5y - 125 - 22y = -22 + 547 = 27y = 47/27
А) 2(4–9d)–(2d+3)=–8(4–d)+3(1+2d
8 - 18d - 2d - 3 = -32 + 8d + 3 + 6
5 - 20d = -32 + 14
5 + 32 = 20d + 14
37 = 34
d = 37/34
б) 5(2–3b)–4(6+2b)=28–(b–2
10 - 15b - 24 - 8b = 28 - b +
-14 - 23b = 26 -
-14 - 26 = b - 23
b = 12/2
b = 6/11
в) –2(3x+4)+(6x+8)=4(5x–2–(5x+8)
-6x - 8 + 6x + 8 = 20x - 8 - 20 - 5x -
0 = -5x - 3
5x = -3
x = -36/5
г) 8(4–3y)–(7–2y)=–(6+3y)+8(y–2
32 - 24y - 7 + 2y = -6 - 3y + 8y - 1
25 - 22y = -6 + 5y - 1
25 - 22y = -22 + 5
47 = 27
y = 47/27