How come the 27x-9 became 27x+9 and why is the +16 there on the second to last step and then just disappears on the last step
I combined like terms. There was a -9 and +16. I combined them to get +7.
How come the 27x-9 became 27x+9 and why is the +16 there on the second to last step and then just disappears on the last step
ReplyDeleteI combined like terms. There was a -9 and +16. I combined them to get +7.
ReplyDelete