1) 1/3Х + 6 = 2Х; 5/3Х = 6; Х = 6 : 5/3; Х = 18/5; Х = 3 3/5...
2) 1/2( 4Х - 2) = -7; 2Х - 1 = -7; 2Х = -7 + 1; 2Х = -6; Х = -6 : 2; Х = -3....
3) 5/6Х + 3 = 1/6Х; 5/6Х - 1/6Х = -3; 4/6Х = -3; 2/3Х = -3; Х = -3 : 2/3; Х = - 9/2; Х = - 4 1/2.
13450500-(Х*706)=12813688
13450500-706х=12813688
706х=13450500-12813688
706х=636812
х=636812 / 706
х=902
проверка:13450500-(902*706)=13450500-636812=12813688
посчитала на калькуляторе...но можно и в столбик.
36
36:2=18
36:3=12
36:4=9
36:9=4