mar4
mar4
24-02-2015
Mathematics
contestada
x-(9x-10)+11=12x+3(-2x+1/3)
Respuesta :
heyDB
heyDB
24-02-2015
Simplify each term
.
x−(9x−10)+11=12x−6x+1
Add
12x
and
−6x
to get
6x
.
x−(9x−10)+11=6x+1
Simplify each term
.
x−9x+10+11=6x+1
Add x
and
−9x
to get
−8x
.
−8x+10+11=6x+1
Add 10
and
11
to get
21.
−8x+21=6x+1
Move 6x to the left hand side of the equation by subtracting 6x from both sides.
−8x+21−6x=1
Add
−8x
and
−6x
to get
−14x
.
−14x+21=1
Move 21 to the right hand side of the equation by subtracting 21 from both sides.
−14x=−21+1
Add
−21
and
1
to get
−20
.
−14x=−20
Divide
each
term
in the
equation
by
−14
.
x=
10/7
x is equal to 10/7 or 1 3/7
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