Question

1.Решите уравнение [3]
(4х + 1) - (4x-3(4х + 3) = 42​

Answer 1

4x+1-(4x-12х-9)=42
4х+1-4х+12х+9=42
12х=42-9-1
12х=32
Х=32:12
х=2,67~3