Respuesta :

choixongdong
9-4X=1
-4x - 1 - 9
-4x = -8
x = -8  /  -4
x =2
x= 2 
9-4(2)=1
9-8=1
when you multiply 4 times 2 you get 8 which when subtracted from 9 leaves you with 1