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Anonymous
Using the quadratic equation formula:-
x = 1 +/- the sqrt of 13
= -2.60555 and 4.60555 (to 5 dp).
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3x=2x-12x=-12
There's an equals missing...
It is a quadratic equation and its solutions are: x = -3/2 and x = 3
3x+7=2x-5 x=-12
If you mean: 3+2x = 12 and 4y-x = 5 then their values are x = 4.5 and y = 2.375