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OpenStudy (anonymous):
2(ax-by)+a+4b=0 2(bx+ay)+b-4a=0 find value of x & y by cross multiplication
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OpenStudy (anonymous):
maybe solve for a in top eq plug it back to bottom eq
OpenStudy (shubhamsrg):
you know how to solve/evaluate determinants mam? cross multipication is the same thing..
OpenStudy (shubhamsrg):
not exactly the same,,but similar..
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