senhathajaman12 senhathajaman12

19-12-2017
Mathematics

contestada

4 (3x + 5y + 2z) + 3(x-z)

Tom: 12x + 20y +8z
Jess: 5(3x + 4y +2)
chistian: 15x + 20y - 5z
which one is equivilant?

Respuesta :

alafasy114 alafasy114

19-12-2017

chistian
15x+20-5z
hope this helps

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JackieB17 JackieB17

19-12-2017

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

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