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OpenStudy (anonymous):
5x + 2y = 8 x + y = 4 If you want to solve the system of equations by addition, which of the following could you do?
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OpenStudy (anonymous):
is there any options
OpenStudy (anonymous):
multiply it by -2 because the whole point is to cancel out a variable. By multiplying the second equation by -2 the formula will turn to -2x+-2=-8 so when you add the y's cancel
OpenStudy (anonymous):
and it make it easy to solve
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