Question

НАЙДИТЕ КОРЕНЬ УРАВНЕНИЯ!!

Answer 1

$\frac{3x+78}{6} =-1+18$
[tex] \frac{3x+78}{6}=17
3х+78=6*17
3х=102-78
3х=24
х=8

Answer 2

$\frac{3x+78}{6} -18=-1 /*6 \\ 3x+78-108=-6 \\ 3x=-6-78+108 \\ 3x=24 \\ x=24:3 \\ x=8$