X+75=2075 x*8=720 x-80=360 56:x=56 90-x=90
Х+75=2075 х=2075-75 х=2000 х*8=720 х=720:8 х=90 х-80=360 х=80+360 х=440 56:х=56 х=56:56 х=1 90-х=90 х=90-90 х=0
Х+75=2075 х=2075-75 Х=2000 Х*8=720 Х=720:8 Х=90 Х -80=360 Х=360+80 Х=440 56:х=56 Х=56:56 Х=1 90-х=90 Х=90-90 Х=0