Ответ:
161) 18х+30у+7х-5у=25х+25у=25(х+у)=25*3=75
84а+3в-73а+8в=11а+11в=11(а+в)=11*7=77
3m+35n+24m-8n=27m+27n=27(m+n)=27*4=108
96 чисел это числа вот эти-501,502,504,505,506,507,508,510,511,512,513,514,515,516,157,518,519,520,522,523,524,525,526,527,528,529,530,531,532,533,534,535,536,537,538,539,540,542,543,544,545,546,548,549,550,552,553,554,555,556,557,558,559,560,561,562,564,565,566,567,568,570,572,573,574,575,576,578,579,580,581,582,583,584,585,586,588,589,590,591,592,594,595,596,597,598