Question

Write an expression that is equivalent to 3(7+ x).
3(7+ x)= ? + ?x

Answer 1

21 + 3x

Explanation:

Its simple really. Just expanding the brackets by bringing the 3 inside the bracket :

3 × 7 = 21

3 × x = 3x

So our answer will 21 + 3x

Hope this helped and have a good day