Question

hallar el producto del C.S de:
10x+1=7y
3(x-1)=y

Answer 1

1.......3(X-1)=Y___3X-3=Y____3X=Y+3____X=Y+3/3

2......10X+1=7Y___10(Y+3/3)+1=7Y___10Y+33=21Y__11Y=33___Y=3

rPTA:3