7+3x=-2x-3 помогите решить

1 1/3 * (8 2/3 : 1 4/9 - 3 3/8 + 1 5/8) - 1 5/6 = - 1/2

1) 8 2/3 : 1 4/9 = 26/3 : 13/9 = 26/3 * 9/13 = (2*3)/(1*1) = 6

2) 3 3/8 + 1 5/8 = 4 8/8 = 5

3) 6 - 5 = 1

4) 1 1/3 * 1 = 1 1/3

5) 1 1/3 - 1 5/6 = 1 2/6 - 1 5/6 = - 3/6 = - 1/2

Ответ: (-1/2).