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OpenStudy (anonymous):
3x-y=7 y=x+3
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OpenStudy (anonymous):
x=5, y=8
OpenStudy (anonymous):
Substitute x + 3 for y in first equation to get 3x - x - 3 = 7 2x - 3 = 7 2x = 10 x=5 Substitute 5 for x in second equation to get y = 5 +3, so y = 8 check by substituting 5 and 8 in both equations 3x5 - 8 = 7 correct 8 = 5 +3 correct
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