Tentukanlah nilai a, b, dan c:5a-b=24, a:b=5:2, dan c= 1/7(a+b).... Question from @brilliana

August 2018 2 57 Report

Tentukanlah nilai a, b, dan c:
5a-b=24, a:b=5:2, dan c= 1/7(a+b)

tidak puas? sampaikan! 5a = 24 + b
a = $\frac{24+b}{5}$
a : b = 5 : 2
$\frac{ \frac{24 + b}{5} }{b} = \frac{5}{2}$
5b = $2 ( \frac{24+b}{5})$
5b = $\frac{48+2b}{5}$
25b = 48 + 2b
23 b = 48
b = $\frac{48}{23}$

a = $\frac{24 + b}{5}$ = $\frac{24 + \frac{48}{23} }{5} = \frac{ \frac{600}{23} }{5} = \frac{600}{115}$

c = 1/7 (a+b)
= 1/7 ( $\frac{600}{115} + \frac{48}{23}$
= 1/7 ( $\frac{19.320}{2645}$
= $\frac{19.320}{18.515}$

0 votes Thanks 3

MEnteguhSyachG 5a = 24 + b
a =
a : b = 5 : 2

5b =
5b =
25b = 48 + 2b

23 b = 48
b =
cari a
a = =
cari c
c = 1/7 (a+b)
= 1/7 (
= 1/7 (
=

0 votes Thanks 1

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