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20 system by substitution
Contributed by: Childress
(
2x - 3y =  -1
x = y + 1
solve the system of equations 
by substitution method
,
)
(
y = 6x - 11
-2x - 3y = -7
solve the system of equations 
by substitution method
,
)
(
y = -2
4x - 3y = 18
solve the system of equations 
by substitution method
,
)
(
y = -2x + 20
6x - 5y = 12
solve the system of equations 
by substitution method
,
)
(
x = -3y + 1
-3x - 3y =  -15
solve the system of equations 
by substitution method
,
)
(
y=  -2x + 9
5x - 2y = 18
solve the system of equations 
by substitution method
,
)
(
-7x + 8y =  -5
x = 3y - 3
solve the system of equations 
by substitution method
,
)
(
y = 4x + 6
y + 5x = -21
solve the system of equations 
by substitution method
,
)
(
solve the system of equations 
by substitution method
-3x - 8y = 20
y = 5x + 19
,
)
(
solve the system of equations 
by substitution method
5x - 4y =  -3
y = - 3x + 5
,
)
(
solve the system of equations 
by substitution method
-3x - 2y =  -12
y = 5x - 7
,
)
(
solve the system of equations 
by substitution method
- 7x - 2y =   -13
x  =  2y + 11
,
)
(
solve the system of equations 
by substitution method
3x - 8y = 245x - 3 = y
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)
(
solve the system of equations 
by substitution method
-3x + 6y =  -12
y = 5x - 2
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)
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