a) X x 48 + 52 x X = 160
b) 7 x ( 8+2xX) = 210
c ) X x 56 + 44 x X + 285 x X = 130
d) ( x -12 ) x 17 : 11 = 51
e) 915 x X + 285 x X = 48
g) ( X x 7 + 8 ) : 5 = 10
h) (X + 5 ) x 19 : 13 = 57 4x(36 - 4 x X)= 32
i) (X : 2 + 50 ) : 5 = 12
giúp mình với plese
a) X x 48 + 52 x X =160
X x ( 48+52) = 160
X x 100 = 160
X = 8/5
b) 7 x ( 8+2xX) =210
8+2xX = 30
2xX= 22
X= 11
c) X x 56 + 44 x X+285 x X =130
X x ( 56+44+285)= 130
X x 385 =130
X = 26/77
d) (x-12) x 17 : 11= 51
( x-12) x17 =561
x-12 = 33
x= 45
e) 915 x X +285 x X =48
X x( 915+285) = 48
X x 1200 = 48
X =1/25
\(48x+52x=160\)
\(x.\left(48+52\right)=160\)
\(100x=160\)
\(x=\frac{160}{100}\)
\(x=1,6\)
Vậy \(x=1,6\)
Đăng ít thôi b