При х = 2
32 * x + 3 * (x + 5) = 85
32х + 3х + 15 = 85
35х + 15 = 85
35х = 85 - 15
35х = 70
х = 70 : 35
х = 2
При х = 2
32 * x + 3 * (x + 5) = 85
32х + 3х + 15 = 85
35х + 15 = 85
35х = 85 - 15
35х = 70
х = 70 : 35
х = 2