А) 2(4–9d)–(2d+3)=–8(4–d)+3(1+2d)
8 – 18d – 2d – 3 = – 32 + 8d + 3 + 6d
– 18d – 2d – 8d – 6d = 3 – 32 + 3 – 8
-34d = -34
d = 1
б) 5(2–3b)–4(6+2b)=28–(b–2)
10 – 15b – 24 – 8b = 28 – b + 2
– 15b – 8b + b = 2 + 28 + 24 – 10
-22b = 44
b = -2
в) –2(3x+4)+(6x+8)=4(5x–2–(5x+8))
раскроем скобки
-6x-8+6x+8 = 20x-8-20x-32
-6x-8+6x+8+40 = 0
+40 ≠ 0
Данное уравнение не имеет решений при любом x
г) 8(4–3y)–(7–2y)=–(6+3y)+8(y–2)
32 – 24y – 7 + 2y = – 6 – 3y + 8y – 16
– 24y + 2y + 3y – 8y = – 16 – 6 + 7 – 32
-27y = -47
y = -47/-27
у=1,74074074074
А) 2(4–9d)–(2d+3)=–8(4–d)+3(1+2d)
8 – 18d – 2d – 3 = – 32 + 8d + 3 + 6d
– 18d – 2d – 8d – 6d = 3 – 32 + 3 – 8
-34d = -34
d = 1
б) 5(2–3b)–4(6+2b)=28–(b–2)
10 – 15b – 24 – 8b = 28 – b + 2
– 15b – 8b + b = 2 + 28 + 24 – 10
-22b = 44
b = -2
в) –2(3x+4)+(6x+8)=4(5x–2–(5x+8))
раскроем скобки
-6x-8+6x+8 = 20x-8-20x-32
-6x-8+6x+8+40 = 0
+40 ≠ 0
Данное уравнение не имеет решений при любом x
г) 8(4–3y)–(7–2y)=–(6+3y)+8(y–2)
32 – 24y – 7 + 2y = – 6 – 3y + 8y – 16
– 24y + 2y + 3y – 8y = – 16 – 6 + 7 – 32
-27y = -47
y = -47/-27
у=1,74074074074