Вопрос:

Решите уравнения: 1) 2x+3=-9x; 2) 3x-4x=8x; 3) 3x-9=-2x; 4) 30(2x-3)=5(4x-15); 5) 7(x+2)=0(7x+4); 6) 5(3-8x)=9(2-4x); 7) 9+8x=6x-2; 8) -4-6x=4x-3; 9) 7+8x=-2x-4; 10) 3x-4=8x+5

Фотография

Ответ ассистента

1) $2x + 3 = -9x$ $2x + 9x = -3 \rightarrow 11x = -3 \rightarrow x = -\frac{3}{11}$ 2) $3x - 4x = 8x$ $-x = 8x \rightarrow 9x = 0 \rightarrow x = 0$ 3) $3x - 9 = -2x$ $3x + 2x = 9 \rightarrow 5x = 9 \rightarrow x = 1.8$ 4) $30(2x - 3) = 5(4x - 15)$ $60x - 90 = 20x - 75 \rightarrow 40x = 15 \rightarrow x = 0.375$ 5) $7(x + 2) = 0(7x + 4)$ $7x + 14 = 0 \rightarrow 7x = -14 \rightarrow x = -2$ 6) $5(3 - 8x) = 9(2 - 4x)$ $15 - 40x = 18 - 36x \rightarrow -4x = 3 \rightarrow x = -0.75$ 7) $9 + 8x = 6x - 2$ $8x - 6x = -2 - 9 \rightarrow 2x = -11 \rightarrow x = -5.5$ 8) $-4 - 6x = 4x - 3$ $-6x - 4x = -3 + 4 \rightarrow -10x = 1 \rightarrow x = -0.1$ 9) $7 + 8x = -2x - 4$ $8x + 2x = -4 - 7 \rightarrow 10x = -11 \rightarrow x = -1.1$ 10) $3x - 4 = 8x + 5$ $3x - 8x = 5 + 4 \rightarrow -5x = 9 \rightarrow x = -1.8$

Другие решения

Что ещё задавали пользователи