anna8352
anna8352
06-02-2019
Mathematics
contestada
Help me !! for algebra :*(
Respuesta :
minerj
minerj
08-02-2019
Let 1 = a, 2 =b and 3 = c
a = 1/2b
c = a + b
a+b+c = 180
By substitution
2c = 180
c = 90
a+b = 90 by substitution of c into 3rd equation
By substitution
3/2b = 90
b = 60
a = 30
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