-720=x-9x
plese explain to me how to do this prob step by step
-720=x-9x
Combine like terms.
-720 = -8x
-720/-8 = x
90 = x
first you would need to find the value of x
I divided -720 by 9 and got -80 however this is not correct so I tried -90 and it proved to be true.
So x = -90
I also would like to know what a simpler way of solving this problem would be?