Tìm số tự nhiên x biết :
a ) ( 3247 - 3x ) × 15 = 270
b ) 12 × ( 134 - x ) - 126 = 54
c ) ( 4x + 3 )3 = 64
17/5 :x=134
2x+3x=57:5
7.(42- x) = 53+134
X+18÷32=5×42
134-5.(x+4)=34
1, 201415.(2.x-60)=201416
2, 134:(x-3)=35+160÷5
Tính nhanh:
-134 + 51 x 134 + (-134) x 48
2 . ( x + 5 ) + 126 = x + 1000 - 254
Tìm x:
a, \(x-\dfrac{1}{4}=\dfrac{7}{2}.\dfrac{-3}{5}\)
b, \(\dfrac{x}{134}=\dfrac{9}{7}.\dfrac{5}{-11}\)
5x+3 + 5x = 126 x 53