x - 25 = 85
x = 85 + 25
x = 110
x + 45 = 80
x = 80 - 45
x = 35
x - 12 = 95
x = 95 + 12
x = 107
x + 25 = 125
x = 125 - 25
x = 100
x - 85 = 452
x = 452 + 85
x = 537
x + 52 = 96
x = 96 - 52
x = 44
\(x-25=85\) \(x+45=80\)
\(x=85+25\) \(x=80-45\)
\(x=110\) \(x=35\)
\(x-12=95\) \(x+25=125\)
\(x=95+12\) \(x=125-25\)
\(x=107\) \(x=100\)
\(x-85=452\) \(x+52=96\)
\(x=452+85\) \(x=96-52\)
\(x=537\) \(x=44\)
mình ghi nhầm rồi , câu c) bằng 107 mới đúng