5 x 9 ) 7 y 2 )- x July 8, 2019 16 32 64 128 5 x 9 )+ 7 y 2 )- x Which expression is equivalent to 5 x 9 )+ 7 y 2 − x Which expression s is are equivalent to 5 x 9 )+ 7 y 2 − x X 7 y 3 5 x 2 y 9 6 by elimination method 5 x 7 = 35 9 x 5/7 5 x - 9 7= -12 8
