(х+57):7=12 (161-y):16=9 112:(8+х)=7
Х+57=12*7 х+57=84 х=84-57 х=27 161-у=9*16 161-у=144 у=161-144 у=17 8+х=112:7 8+х=16 х=16-8 х=8
1) X + 57 = 12 * 7 = 84 X = 84 - 57 = 27 2) 161 - Y = 9 * 16 = 144 161 - 144 = Y Y = 17 3) 8 + X = 112 : 7 = 16 X = 16 - 8 = 8