1)205х-(55х+39х) = 205x − 55x − 39x = 111x
2)717п+8п+283п+42п=1050п
3)617х+(33х+47х) = 617x + 33x + 47x = 697x
4)26у+(32у-7у)+у=26y + 32y − 7y + y = 52y
1)205х-(55х+39х) = 205x − 55x − 39x = 111x
2)717п+8п+283п+42п=1050п
3)617х+(33х+47х) = 617x + 33x + 47x = 697x
4)26у+(32у-7у)+у=26y + 32y − 7y + y = 52y