1000-х=35+6*8
1000-x = 35+48
1000-x = 83
x = 1000 - 83
x = 917
81:у=63:7
81:y=9
y=81:9
y=9
Х*8=100-(4*9)
x*8=100-36
8x=64
x=64:8
x=8
