Fhgjhkjl
Fhgjhkjl
30-09-2015
Mathematics
contestada
What is 3x - 4 + 20 =55
Respuesta :
Аноним
Аноним
30-09-2015
So first subtract 20 from both sides of the equation.
3x-4=35
now add 4 to both sides.
3x=39
now divide both sides by
x=13
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