britbryant
britbryant
11-03-2016
Mathematics
contestada
-84= -4b-4(-7-8b)
solve for b
Respuesta :
Billymkhoi
Billymkhoi
11-03-2016
-84= -4b -4(-7 -8b)
⇒ -84= -4b -4* (-7) -4*(-8b) (distributive property)
⇒ -84= -4b+ 28+ 32b
⇒ -84 -28= 32b -4b
⇒ -112= 28b
⇒ -112/28= b (inverse operation)
⇒ -4= b
Final answer: b= -4
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