2x-7y=5
-3x-4=y
(substituition method)
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2x-7y=5 -3x-4=y (substituition method)
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Answer:
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step by step explanation:
Given:
[tex]2x - 7y = 5 \: \: \: \: \: ....(1) \\ - 3x - 4 = y \: \: \: \: \: ....(2)[/tex]
putting value of y in eq.(1)
[tex] = > 2x - 7y = 5 \\ = > 2x - 7( - 3x - 4) = 5 \\ = > 2x + 21x + 28 = 5 \\ = > 23x = 5 - 28 \\ = >23 x = - 23 \\ = > x = \frac{ - 23}{23} \\ x = > - 1[/tex]
now,putting value of x in eq.(2)
[tex] = > - 3x - 4 = y \\ = > - 3( - 1) - 4 = y \\ = > 3 - 4 = y \\ y = > - 1[/tex]
Hence, the value of x =y= -1.
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hope it is clear!!