Question

HELP PLS!!!!!!!!!!! Add the following and express the answer in simplified form. a)
`2x, 9x , and -x` b)
`3xy, 2xy, 4xy, and -7xy` c)
`6abc, -8abc, 5abc, and -abc\\` d)
`-2ab, -3ab, 9, 7ab, -4`

Answer 1

a)
`2x+9x+(-x)=10x`

b)
`3xy+2xy+4xy+(-7xy)=2xy`

c)
`6abc+(-8abc)+5abc+(-abc)=2abc`

d)
`(-2ab)+(-3ab)+9+7ab+(-4)=2ab+5`