Question

Find the value of expression 2a - 2b - 4 + a + b, taking a = 2 and b = 3.

• A. -1
• B. 1
• C. 5
• D. 2

Answer 1

The correct option is A

-1

Substituting values of a = 2 and b = 3 in the expression:

$\Rightarrow 2a-2b-4+a+b=2\left(2\right)-2\left(3\right)-4+2+3$

$\Rightarrow 4-6-4+2+3=-1$

Hence, the value of expression is -1.