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OpenStudy (anonymous):
What is a possible first step to eliminate a variable in the following system? 7x – 9y = 2 3x – 6y = –4
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OpenStudy (anonymous):
u can multiply the first eqn by 3 and the second by 7 and then subtract the two new equations
OpenStudy (no_ellephant):
multiply the first equation by 3 and the second equation by 7 and then subtract the second equation from the first. |dw:1336609074422:dw| your x will cancel.
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