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OpenStudy (anonymous):
Help!! Solve using substitution: y − 2x − 1 = 0 -4y = 6 − 8x
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OpenStudy (anonymous):
Add 8x and 6 to each side of the second equation so you have -4y - 8x + 6. Then add multiply the first equation by 4 so you have 4y - 8x - 4. Then simplify with addition.
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