Question

Find the value of the expression 2a – 2b – 4 – 5 + a , when a = 1 , b = -2

Answer 1

Answer:

-2

Step-by-step explanation:

2a - 2b - 4 - 5 + a

2*1 - 2*(-2) - 4 - 5 + 1

2 + 4 - 4 - 5 + 1

7 - 9

-2

Answer 2

Answer:

2a-2b-4-5+a

remember a=1 and b=-2

2*1 - 2*-2 - 4 - 5 +a

2-(-4)-4-5+a

6-4-5+a

2-5+1

-3+1

ans= -2

Step-by-step explanation: