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secondary 4 | A Maths

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Candice

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Good evening! I cant get the answer, what i got was x=-0.5 and y=-1.5

Date Posted: 4 months ago
Views: 21
Eric Nicholas K
4 months ago
Good evening Candice! Two linear simultaneous equations in two variables will have exactly one solution in the great majority of situations. We can always check back our values of x and y into the equations to see if they are valid. The given solution is valid for the first equation but fails in the second equation.

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Eric Nicholas K's answer
4228 answers (Tutor Details)
1st
Good evening Candice! I obtained x = -0.5, y = -1.5 for my workings. I used an ordinary method instead of matrix method as the matrix method of solving simultaneous equations is not in your syllabus for E Maths and A Maths.
Date Posted: 4 months ago
J
4 months ago
The answer would be valid if +10 is changed to + 170
Candice
4 months ago
Oh okay thanks!