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OpenStudy (anonymous):
whats the best way to solve this: 3x-y+2z=13 5x-3y-z=3 4x+2x+5z=30 back substitution or determinant method?
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OpenStudy (anonymous):
4x+2x+5z=30 wut?
OpenStudy (anonymous):
oops 2y
OpenStudy (anonymous):
U can do elimination. 1. Multiply 2nd eq. by 2 and add to the 1st . 2. Multiply 2nd eq. by 5 and add to the 3rd . You get rid of z and so on.
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