Ц-целых 3ц7/18+(x+2/3)=5ц. Помогите плиз!
5ц-3ц7/18=х+2/3 2ц-7/18=х+2/3 2ц=х+2/3+7/18 2ц-19/18=х 1ц+18/18-19/18=х 1ц-1/18=х 18/18-1/18=х 17/18=х