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Attempt following question by selecting a choice to answer.
c
Solve the linear system.
5
x
- 6
y
= -10 --- (1)
- 6
x
+ 7
y
= 11 --- (2)
BBBB cccc
A.
c
(4 , 5 )
B.
c
(- 4 , 5 )
C.
c
(4 , - 5 )
D.
c
(- 4 , - 5 )
cc
A
View Solution Steps
Step 1: [Multiply Equation 1 by 6.] 30
x
- 36
y
= -60
Step 2: [Multiply Equation 2 by 5.]-30
x
+ 35
y
= 55
______________
Step 5: [Add the Equations.] -
y
= -5
Step 6: [Solve for
y
.]
y
= 5
Step 7: [Substitute
y
= 5 in Equation 1.]5
x
- 6(5) = -10
Step 8: [Multiply.]5
x
- 30 = -10
Step 9: [Add 30 to both sides.]5
x
= 20
Step 10: [Solve for
x
.]
x
= 4
Step 11: The solution for the linear system is (4, 5).
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