Question

Find the value of expression 2a – 2b, if a = -1 and b=-2.​

Answer 1

Answer:

$2a - 2b$

$a = - 1 \\ b = - 2$

$= 2( - 1) - 2( - 2)$

$= -2 + 4$

$= 4 - 2$

$= 2$

Answer 2

Answer:

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Step-by-step explanation:

2a-2b

=2(-1) - 2(-2)

=-2 - -4

=-2+4

=2