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denis23 [38]
3 years ago
14

Show all your work and how u know its the right answer 6x -3 =21

Mathematics
2 answers:
kondaur [170]3 years ago
6 0

Answer:

x=4

Step-by-step explanation:

6x-3=21

+3     +3      add three to both sides to get the coefficient on its own side

6x=24         (whenever we do something to one side, we do it to the other.)

÷6  ÷6        divide both sides by 6 to get our variable (x) alone

x=4             6x/6=x  24/6=4

elixir [45]3 years ago
3 0
6x-3=21

6x-3(+3)=21(+3) *to cancel 3 out & what
you do to something
on one side of the
equal side you need
to do to the other*

6x=24

6x(divide 6)=24 (divide 6) *to cancel the
6 out,
because you
want x by
itself

x = 4
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