Question

11. The value of expression 2a - 2b-4-5+ a at a=1, b=-2
(a) 10
(b) -2
(c) 12
(d) -4​

Answer 1

Answer:

GIVEN EQUATION IS 2A-2B-4-5+A......

TAKING A=1 AND B=-2.......

LET'S START OUR SOLUTION........

=>2(1) -2(-2) -4-5+1

=>2+4-9+1

=>7-9

=>-2

Step-by-step explanation:

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Answer 2

Answer:

-4

Step-by-step explanation:

=(2×1) - (2× -2) - 4 - 5 + 1

= 2 + 4 - 4 - 5 + 1

= 2 - 5 + 1

= -4

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