Решите уравнение (2\3 х-1\5)*15=85

Question

Решите уравнение (2\3 х-1\5)*15=85

Answer 1

2/3x*15-1/5*15=85
2*5x-1*3=85
10x-3=85
10x=88
x=88/10
x=8,8

Answer 2

(2/3х - 1/5) * 15 = 85,
2/3х - 1/5 = 85 : 15,
2/3х - 1/5 = 17/3,
2/3х = 17/3 + 1/5,
2/3х = 85/15 + 3/15,
2/3х = 88/15,
х = 88/15 : 2/3,
х = 88/15 * 3/2,
х = 44/5,
х = 8 4/5 (или 8,8)