44676:(х-251)=204; (Х-8)*(Х-12)=0 ; 18(5Х+6Х-Х)=484200 ;2Х+7Х-3Х+906=3600 ; Х:504=2871-1983 ; а+а+3=39 ; 18х+5+х+17+4х=91.Допоможіть!Дякую!

Try to solve in the beginning. Please. After all it is very easy

Задачи очень легкие. 

1)х-251=44676/204х-251=219х=219+251х=470 второй попозже3)90х+108х-18х=484200180х=484200х=484200/180х=26904)6х=3600-9066х=2694х=2694/6х=4495)х:504=888х=888*5044475526)2а=39-32а=36а=36/2а=187)18х+х+4х+22=9123х=91-2223х=69х=69/23х=3