Question

The value of expression 2a-2b-4-5+a, when a= -1 and b= -2​

Answer 1

Answer:

-8

Step-by-step explanation:

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Answer 2

Answer:

$a = (- 1) \\ b = ( - 2) \\ so \: \\ 2a - 2b - 4 - 5 + a \\ = (2 \times ( - 1)) - (2 \times ( - 2)) - 4 - 5 + ( - 1) \\ - 2 - ( - 4) - 4 - 5 - 1 \\ = - 2 + 4 - 4 - 5 - 1 \\ = 4 - 12 = ( - 8)$