Question

simplify
-3 (7w) + 7 (3w)
v v
-21w + 21w
42w
is that correct

Answer 1

=0

Answer 2

No. The answer is 0 (zero).

- x + x = 0 (where x is any number)

Because - x + x is same as +x - x which is same as x - x which is ZERO.

Answer 3

rahulg has explained it

Answer 4

can youshow m th steps

Answer 5

u got -21w and 21w....so if u sum two opposite numbers u get 0

Answer 6

sits like this
-3 (7w) + 7 (3w)
v v
-21w + 21w
=0

Answer 7

yes that's it :)

Answer 8

whenever u have two opposite no.s their sum is 0