Question

10
Add a + b - 1.b - a +1,1 - 26
(a) 1
(b)-1
(c) 2
(d)-2



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Answer 1

Answer:

(a) 1

Step-by-step explanation:

a + b - 1

b - a + 1

1 - 2b

Adding:

(a + b - 1) + (b - a + 1) + (1 - 2b)

= (a - a) + (b + b - 2b) + ( -1 + 1 + 1)

= 1