допоможіть (28-4x)*4+8=40

(28-4х)*4+8=40(28-4х)*4=40-8(28-4х)*4=3228-4х=32:428-4х=828-8=4х4х=20х=20:4х=5Проверка:(28-4*5)*4+8=40(28-20)*4+8=408*4+8=4032+8=4040=40