frenchhorn27
frenchhorn27
07-12-2018
Mathematics
contestada
Substitution 4x-2y=10 y=2x-5
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Poisonrose
Poisonrose
07-12-2018
4x-2×(2x-5)=10
4x-4x+10=10 |-10
4x-4x=0
x= everything
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