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OpenStudy (elitedamosh):
I need help with simultaneous linear equations. Will fan
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OpenStudy (elitedamosh):
\[2x - y - 3z = 7\] \[3x + y + z = 10\] \[5x + y +2z = 15\]
OpenStudy (johnweldon1993):
Well, no one likes to work with 3 equations...so lets make it 2 equations Add the first 2 equations...what do we have? |dw:1460912735832:dw| Keep that in your back pocket for now Now subtract the bottom 2 equations |dw:1460912804161:dw| Now we just have a system of 2 equations and 2 unknowns...much easier to solve
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