Question

решите уравнение:
а) 3(5х - 4) - 8х= 4х + 9
б) 19х - 8(х - 3) = 66 - 3х

Answer 1

а)15х-12-8х=4х+9
3х=21
х=7
б) 19х-8х+24=66-3х
14х=42
х=3

Answer 2

А) 15х-12-8х=4х+9
15х-12-8х-4х-9=0
3х-21=0
3х=21
Х=7
В) 19х-8х+24=66-3х
19х-8х+24-66+3х=0
24х-42=0
24х=42
Х=42/24=21/12