Tìm x biết 130 – (100 + x) = 25

a)     130 – (100 + x) = 25

b)    175 + (30 – x) = 200

c)     5(x + 12) + 22 = 92

d)    95 – 5(x + 2) = 45

e)     125 – 5(4 + x) = 15                              h) 1230 : 3(x - 20) = 10

n)    [ (250 – 25) : 15] : x = (450 - 60) : 130