3.48(y-7.5)-1.78(y+50)=52.9(25-y)-2(15+11.8y)

3,48y-26,1-1,78y-89=1322,5-52,9y-30-23,6y3,48y-1,78y+52,9y+23,6y=1322,5-30+26,1+8978,2y=1407,6y=1407,6:78,2y=18