Sydfly333 Sydfly333

20-02-2017
Mathematics

Answered

Solve using systems of equations. -3x-4y=-8

3x+3y=9

Verified Answer :

SyntaxError SyntaxError

20-02-2017

Sure thing!

\(-3x-4y=-8\\ 3x+3y=9\\ ----------\\ 0x-1y=1\\ y=-1\\\)

since y = -1 we can just plug it into the first equation
\(-3x-4(-1)=-8\\ -3x+4=-8\\ -3x=-12\\ x=4\)

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