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secondary 2 | Maths
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using substitution method
Date Posted: 4 years ago
Views: 254
[1] becomes
8y = -20x-52 ... ... ... [3]
subst, [3] into [2],
7x - 7 = -20x-52
x = -5/3
y = -7/3
...
8y = -20x-52 ... ... ... [3]
subst, [3] into [2],
7x - 7 = -20x-52
x = -5/3
y = -7/3
...
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