Решите уравнение (4х+2)•4+(3х-5)•7=84

Question

Решите уравнение (4х+2)•4+(3х-5)•7=84

Answer 1

(4х+2)·4+(3х-5)·7=84
16х+8+21х-35=84
37х=84-8+35
37х=111
х=111:37
х=3

Answer 2

(4x+2)*4+(3x-5)*7=84 16x+8+21x-35=84 37x=84-8+35 37x=111 X=3 (4*3+2)*4+(3*3-5)*7=84 14*4+4*7=84 84=84