10x + 3 – x = 48
10x – x = 48 – 3
9x = 45
x = 5
(у-72):84=204
у-72=204*84
у-72=17136
у=17136+72
у=17208
10x + 3 – x = 48
10x – x = 48 – 3
9x = 45
x = 5
(у-72):84=204
у-72=204*84
у-72=17136
у=17136+72
у=17208