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Algebra 11 Online
OpenStudy (anonymous):

-3 x + 4 y = 25 and y = 2 x + 10 substitute

OpenStudy (anonymous):

multiply equation 2 with 4 and then solve for x

OpenStudy (anonymous):

Substitute the value of y in the equation -3x +4y = 25 and solve.

OpenStudy (anonymous):

In otherwords substitute 2x +10 for y in the first equation

OpenStudy (anonymous):

-3 x + 4(2x+10) = 25 You should be able to distribute and use order of operations.

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