@VickyJ31520 to get 9x, he added 3x and 6x together. since -30 isnt a like term he has to move it to the other side. to get rid of -30 on the left side, you add 30 to it and get zero. on the other side however you get 1080. To move a number to the other side always remember to do the inverse operation. since -30 is subtraction of 30, add 30.
Thank you Doctor Emmett Brown
johncharipurathu 5 days ago
Very profesional explanation!!!!!!!!!!!
carlnunez11 1 month ago
very well explained
Endure28 1 month ago
Great video! :)
quishia 2 months ago
@VickyJ31520 to get 9x, he added 3x and 6x together. since -30 isnt a like term he has to move it to the other side. to get rid of -30 on the left side, you add 30 to it and get zero. on the other side however you get 1080. To move a number to the other side always remember to do the inverse operation. since -30 is subtraction of 30, add 30.
Uuuuuu15 3 months ago
sooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo helpful THANKS
Bieberette4ever 3 months ago
transposition method can also be applied.. ;p
saicretamor 3 months ago
why can't YOU be my math teacher :(
kiara12396 3 months ago
THis Guy is great . Thanks for explaining everything so we know why we do what we do and what to look for . perfect ;D
Debedeb 5 months ago
is this guy dead by now?
jovanni89pliskin 5 months ago