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OpenStudy (anonymous):
please help me solve 6z / 5x = 30 10x+20y=40 4x+7y=28
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OpenStudy (anonymous):
For 10x+20y=40 10x+0=40 10x=40 x=4 0 + 20y = 40 20y = 40 y=2
OpenStudy (anonymous):
For 4x + 7y =28 4x + 0 = 28 4x=28 x=7 0 + 7y = 28 7y= 28 y=4
OpenStudy (anonymous):
do you know how to do the first one?
OpenStudy (anonymous):
not really I'll see what I can do
OpenStudy (anonymous):
okay thank you
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