3 years ago

How to make this a simultaneous equation?

Mathematics

1 answer:

andriy [413]3 years ago

7 0

Hello,

I suppose equations are:

x+y=3 (1)
x+2y=9 (2)

(2)-(1)==>y=6
(1)==>x=3-6

x=-3, y=6
Sol={(-3,6)}

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