Question

Най­ди­те ко­рень урав­не­ния 1+8(3x+7)=9

Answer 1

$1 + 8(3x+7) = 9\\ 1 + 24x + 56 = 9 \\ 24x = -48 \\ x = -2$

Answer 2

1+ 24х+56=9
24х= 9-56-1
24х= -48
х= (-48):24=-2
х=-2