198k views
5 votes
Need help on this almost done

Need help on this almost done-example-1
User Afua
by
5.8k points

1 Answer

1 vote

Explanation:

As shown in the picture, 3(x + 7) = (x + 7) + (2x - 7) + x.

So 3x + 21 = 4x. This means that x = 21.

User Jaskaranbir Singh
by
5.8k points