7(6x-5)+42x=3(5+14x)+49
42x – 35 + 42x = 15 + 42x + 49
42x + 42x – 42x = 49 + 15 + 35
42x = 99
14x = 33
х=33/14
х=2,35714285714
7(6x-5)+42x=3(5+14x)+49
42x – 35 + 42x = 15 + 42x + 49
42x + 42x – 42x = 49 + 15 + 35
42x = 99
14x = 33
х=33/14
х=2,35714285714