Решите 1) 2). Помогите плиз номер 607

х + 1/8х = 3/4
8/8х + 1/8х = 3/4
9/8х = 3/4
х = 3/4 : 9/8
х = 3/4 * 8/9
х = 2/3

2у - 2/5у = 6 2/5
10/5у - 2/5у = 32/5
8/5у = 32/5
у = 32/5 : 8/5
у = 32/5 * 5/8
у = 4

х+1/8*х=3/4
1 1/8*х=3/4
х=3/4:9/8=3/4*8/9
х=2/3
2у-2/5*у=6 2/5
1 3/5*у=6 2/5
8/5*у=32/5
у=32/5:8/5=32/5*5/8
у=4