# algebra

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3(a+2)=4a I multiply 3*a+3*2=4a
so 3a+6=4a I added 3a to 4a/ =7a

• algebra -

You have got:
3a+6=4a
but we know that
3a =3a
So subtract one equation from the second,
3a+6-3a = 4a-3a
which gives
6 = a

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