Solve 8y – 3x +7=0, 2x – y +4=0 by cross multiplication method.
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1
Answer:
Solve
2x+7y−5=0
−3x+8y=−11
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Step-by-step explanation:
ANSWER
The given system of equations is
2x+7y−5=0
−3x+8y=−11
For the cross multiplication method, we write the coefficients as
Hence, we get
(7)(11)−(8)(−5)
x
=
(−5)(−3)−(2)(11)
y
=
(2)(8)−(−3)(7)
1
That is,
117
x
=
−7
y
=
37
1
. i.e., x=
37
117
,y=−
37
7
.
Hence, the solution is (
37
117
,−
37
7
).
solution
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