Question

решить уравнение 3(х+1)(х+2)-(3х-4)(х+2)=36

Answer 1

(3х+3)(х+2)-(3х-4)(х+2)=36
3х²+3х+6х+6-3х²+4х-6х+8=36
7х+14=36
7х=22
х=22:7