7y 6 3 5y 4 July 8, 2019 16 32 64 128 6 3 5y )-( 2 7y 5 4 3y 6 7y 3 4y 1 5y 10 3 6 7y )+ 2 1 5y )= 42 Solve 3 6 7y )+ 2 1 5y )= 42 7 5y+(6-7 3y)-5 8 6y+3 7=38 5
