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OpenStudy (anonymous):
If x = 4 in this equation, what does y equal? 5x + 8y = 4 A. y = 2 B. y = 4 C. y = -2 D. y = -4
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OpenStudy (anonymous):
first, put 4 as x in 5x
OpenStudy (anonymous):
got it?
OpenStudy (ivettef365):
5(4) + 8y = 4 20 + 8y = 4 -20 -20 ------------- 8y = -16 --- --- 8 8 therefore, y = -2
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