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Afla suma numerelor a+ b+ c, stiind ca : a= b : 5, b - c = 420 si b = 975

Răspuns :

Ahug4good
a= b/5
b-c = 420
b= 975
- c=  420-975
c= 555
a= 975/5 = 195

a+b+c = 195+555+975 = 1725
a=b:5=975:5=195
b-c=420 <=> 975-c=420 <=> -c=420-975 <=> -c=-555<=>c=555
suma : a+b+c= 195+975+555=1725

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