Jika diketahui a+ b = 5ab

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b + c = 6bc
a + c = 7ac
Maka a+ b+ c adalah

Jika diketahui a+ b = 5ab

A = -b + 5ab
b = -c + 6ab
c = -a + 7ac

a + b + c = -b + 5ab + -c + 6ab + -a + 7ac = -a – b – c + 5ab + 6ab + 7ac

maaf jika salah