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Yakvenalex [24]
4 years ago
14

A + b + c = 180 b = 3a c = 5a Whats B

Mathematics
2 answers:
NikAS [45]4 years ago
4 0
Sub

b=3a so put 3a for every b
c=5a so put 5a for every c
a+3a+5a=180
9a=180
divide 9 both sides
a=20

b=3a
b=3(20)
b=60
icang [17]4 years ago
3 0
Plug 3a for b and 5a for c

a + 3a + 5a = 180

9a = 180

a = 20

b = 3 x a = 3 x 20

b = 60
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