rubydai03
contestada

Can I please have some help with these?? I'm desperate.


Please help me simplify these expressions! Thank you!!


a) 2 1/4x+(4 1/3x-7 4/5) divided by 2 3/5


b) 8x-1 1/7(1 1/3x-12)

Respuesta :

dannielle
a) 2 1/4=(4*2+1)/4=9/4
    a b/c=(c*a+b)/c

if you apply this formula ⇒ 4 1/3=13/3, 7 4/5=39/5, 2 3/5= 13/5

(9/4*x+13/3*x- 39/5): 13/5=
[x*(9*15/60 +20*13/60) - 39*12/60 ]*5/13=
[x(135+260)/60 - 468/60]*5/13=(395x-468)/60* 5/13=(395x-468)/156
 b) I do not understand...please replay with the exercise

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