Question

a(b+c_=120,
b(c+a)=144,
c(a+b)=168

Answer 1

what is your question i can not understand

Answer 2

Answer:

a=6,b=18,c=2

Step-by-step explanation:

ab+ac=120—(I)

bc+ab=144—(ii)

ca+cb=168—(iii)

from (iii)-(I) we get

ca-ab=24—(iv)

from (I)+(iv) we get

ca=12—(v)

sub [ca=12] in (iii)

cb=156—(vi)

sub [(v)] in (I) we get

ab=108—(vii)

from [(v),(vi),and(vii)] in [(I),(ii) and (iii)]

we get

• 6(18+2)=120
• 18(2+6)=144
• 2(6+18)=168

therefore,a=6,b=18,c=2