josh8
josh8
26-02-2015
Mathematics
contestada
how to solve 7^3x+4=49^2x+1
Respuesta :
heyDB
heyDB
26-02-2015
Raise 49
to the
power
of
2
to get
2401.
7^3
x+4=2401x+1
Raise 7
to the
power
of
3
to get
343.
343x+4=2401x+1
Since
2401x
contains the
variable
to solve for, move it to the left-hand side of the
equation
by subtracting
2401x
from both sides.
343x+4−2401x=1
Add
343x
and
−2401x
to get
−2058x
.
−2058x+4=1
Since 4
does not contain the
variable
to solve for, move it to the right-hand side of the
equation
by subtracting
4
from both sides.
−2058x=−4+1
Add
−4
and
1
to get
−3
.
−2058x=−3
Divide
each
term
in the
equation
by
−2058
.
x=
1/686
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