Question

Which expression is equivalent to 2(a + 2b) - a - 2b?

3a + 2b
3a - 2b
a - 2b
a + 2b

Answer 1

The correct answer is D) a+2b.

Hope it helps!

Answer 2

a + 2b

Explanation:

To find the equivalent of the given expression, we must open up the parenthesis by multiplying each element in the parenthesis by 2, we would then collect like terms and simplify the algebraic expression.

2(a + 2b) - a - 2b

= 2a + 4b - a - 2b

= 2a - a + 4b - 2b

= a + 2b