haleybrooks
haleybrooks
22-08-2018
Mathematics
contestada
how do i work out 3(d-4)=9
Respuesta :
Shinrinyoku
Shinrinyoku
23-08-2018
3(d−4) = 9
begin by distributing
(3)(d)+(3)(−4) =9
solve right side
3d + -12 = 9
add 12 to both sides
3d = 21
divide both sides by 3
d = 7
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