Question

Помогите пожалуйста только второй столбик ( там только чётные)

Answer 1

Ответ:

$2) x - 7 = 0\\\\x = 7$

$4) 17 + x = 20\\\\x = 20 - 17\\\\x = 3$

$6) 2x - 5 = 3\\\\2x = 3+5\\\\2x = 8\\\\x = 4$

$8) 5 - 2x = 3\\\\2x = 5 - 3\\\\2x = 2\\\\x = 1$

$10) 4(x-1) + 3 = 5\\\\4x - 4 + 3 = 5\\\\4x - 1 = 5\\\\4x = 5+ 1\\\\4x = 6\\\\x = 1,5$

$12) 7 + 4(x+1) = 15\\\\4x+4 = 15-7\\\\4x+4 = 8\\\\4x = 8-4\\\\4x = 4\\\\x = 1$

$14) 2x + 2(x+3) = 10\\\\2x + 2x + 6 = 10\\\\4x = 10-6\\\\4x = 4\\\\x = 1$

$16) \frac{x+2}{3} = 0\\\\x+2 = 0\\\\x = -2$

$18) \frac{2x+1}{3} = 5\\\\2x+1 = 15\\\\2x = 15-1\\\\2x = 14\\\\x = 7$

$20) \frac{4x-3}{5} = -3\\\\4x - 3 = -15\\\\4x = -12\\\\x = -3$

$22) \frac{2-3(x+2)}{7} = 2\\\\ 2 - 2x - 6 = 14\\\\-2x = 14 - 2 + 6\\\\-2x = 18\\\\x = -9$

$24) \frac{(2x+1)*2}{3} + 2 = 0\\\\\frac{(2x+1)*2}{3} = -2\\\\2(2x+1) = -6\\\\4x + 2 = -6\\\\4x = -8\\\\x = -2$

$26) 15x + 7(3-x) = -3\\\\15x + 21 - 7x = -3\\\\15x - 7x = -3 - 21\\\\8x = -24\\\\x = -3$

$28) 6+ \frac{3x-2}{5} = x\\\\\frac{3x-2}{5} = x-6\\\\3x - 2 = 5(x-6)\\\\3x - 2 = 5x - 30\\\\3x - 5x = -30 + 2\\\\-2x = -28\\\\x = 14$

$30) \frac{5(x-2)}{2} + \frac{x-15}{4} = -6\\\\10(x-2) + x - 15 = -24\\\\10x - 20 + x - 15 = -24\\\\10x + x = -24 + 20 + 15\\\\11x = 11\\\\x = 1$