Вправи 1201 - 1300 » 1277 (9-12)

9) 9|х| – 6 = 0; 9|х| = 6; |х| = 2/3; х = 2/3 або х=–2/3 10) 8/х = 6/5; 6х = 40; х = 62/3. 11) 7/4 = х/2; 4х = 14; х = 3,5; х = 13. 12) (х + 3)/12 = 4/3; 3(х + 3) = 48; х + 3 = 16.