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OpenStudy (anonymous):
7x+15y=32 x-3y=20 solve using elimination
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OpenStudy (gorv):
from x-3y=20 x=20+3y put in otther equation 7*(20+3y)+15y=32 140+21y+15y=32 36y=32-140=-102 y=-102/36=-17/6
OpenStudy (gorv):
x=23/2
OpenStudy (anonymous):
thank you gorv
OpenStudy (gorv):
wlcm :)
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