a)\(\left(x-32\right):16-13=48\)
\(\left(x-32\right):16=48+13\)
\(x+32=61.16\)
\(x+32=976\)
\(x=976-32\)
\(x=944\)
b) \(-2\left(2x-8\right)+\left(4-2x\right)=-72\)
\(-4x+16+4-2x=-72\)
\(-4x-2x=-72-16-4\)
\(-6x=-92\)
\(x=\frac{-92}{-6}=\frac{46}{3}\)
hok tốt!!
( x - 32 ) : 16 - 13 = 48
=> ( x - 32 ) : 16 = 48 + 13
=> ( x - 32 ) : 16 = 61
=> x - 32 = 61 . 16
=> x - 32 = 976
=> x = 976 + 32
=> x = 1008
Cách này k ổn cho lắm
a) ( x - 32 ) : 16 - 13 = 48
<=> x : 16 - 32 : 16 = 61
<=> x : 16 - 2 = 61
<=> x : 16 = 63
<=> x = 1008
Vậy x = 1008
b) - 2. ( 2x - 8 ) + ( 4 - 2x ) = - 72
<=> - 2 . ( 2x - 8 ) + 2 . ( 2 - x ) = - 72
<=> 2 . ( 8 - 2x + 2 - x ) = - 72
<=> 10 - 3x = - 36
<=> 3x = 46
<=> \(x=\frac{46}{3}\)
Vậy \(x=\frac{46}{3}\)
Học tốt