jetpacksrule13 jetpacksrule13

23-01-2018
Mathematics

contestada

hey peeps my last one for today (I hope)
only answer if know them both

hey peeps my last one for today I hope only answer if know them both class=

Respuesta :

choixongdong choixongdong

23-01-2018

combine like terms
b + 1.5b + 3 + 15 + 2b - 9 = 90
4.5b + 9 = 90

solve
4.5b + 9 = 90
4.5b = 81
b = 18

answer
first: 4.5b + 9 = 90
second: 18 students

Answer Link

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