Linear Equations

Linear, quadratic, module, parametric equations

Linear Equations

Postby Guest » Wed Jan 15, 2020 10:48 pm

3x-8y=10 and -21x+56y=-84 solve by process of Elimination
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Re: Linear Equations

Postby HallsofIvy » Wed Jan 29, 2020 3:48 pm

You can't solve that pair of equations. there is no solution! If you multiply the first equation, 3x- 8y= 10 by -7 you get -21x+ 56y= -70. Any x, y pair satisfying the first equation will make -21+ 56y equal to -70, not -84.

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