Решите уравнение 2/9х=5/12
2/9х=5/12 х=5/12:2/9 5*9 х=----------- 12*2 х=15/8= 1 7/8
Х=5/12:2/9=5/12*9/2=15/8=1 7/8; х=1 7/8.