Question

пж помогите 2)4)6) только это

Answer 1

$2) \: 2x + 7 = x + 5.5 \\ 2x - x = 5.5 - 7 \\ x = - 1.5 \\ 4) \: 9.5x + 2 = 5.7x - 5.6 \\ 9.5x - 5.7x = - 5.6 - 2 \\ 3.8x = - 7.6 \\ x = - 2 \\ 6) \: 2.9x + 7.4 = x + 1.7 \\ 2.9x - x = - 7.4 + 1.7 \\ 1.9x = - 5.7\\ x = - 3$