Ughmega Ughmega

04-09-2015
Mathematics

contestada

X-(4x-7)=5x-(x+21)
This is for my math class on homework

Respuesta :

Emily2020279 Emily2020279

04-09-2015

x-(4x-7)=5x-(x+21)
x-4x+7=5x-x-21
-3x+7=4x-21
-7 -7
-3x=4x-28
-4x -4x
-7x=-28
/-7 /-7
x=4

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