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4 (3x + 5y + 2z) + 3(x-z) Tom: 12x + 20y +8z Jess: 5(3x + 4y +2) chistian: 15x + 20y - 5z which one is equivilant?
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Apr 15, 2018
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4 (3x + 5y + 2z) + 3(x-z)
Tom: 12x + 20y +8z
Jess: 5(3x + 4y +2)
chistian: 15x + 20y - 5z
which one is equivilant?
Mathematics
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Pavel Grigorev
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Christian is right. 4(3x+5y+2z)=12x+20y+8z, but you're not done. 3(x-z)=3x-3z. 12x+3x=15x. 8z-3z=5z. So, 15x+20y-5z is right
Tahoar
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Apr 17, 2018
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chistian
15x+20-5z
hope this helps
Krdx
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Apr 20, 2018
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