(х+6.2)+10=12
-(х+6.2)10=12

1) х+6.2+10=12 х=12-6.2-10 х=-4.22) -(х+6.2)*10=12 -10х-62=12 -10х=12+62 -10х=74 х=-7.4

(х+6.2)+10=12х+6.2+10=12х= 12-6.2-10х= -4.2-(х+6.2)10=12-10х-62=12-10х=12+62-10х=74х= 74:(-10)х= -7.4