Question

a:b=1:2 Then 3(a-b) is ?​


please show the steps

Answer 1

Answer:

-3a or -3b/2

Step-by-step explanation:

Let a = x, b = 2x

Then 3(x-2x)

= 3(-x)

= -3x

= -3a

OR

a/b = 1/2

2a = b

a = b/2 (eq.1)

3(a-b) = 3(b/2 - b)

= 3(b - 2b)/2

= 3/2 (-b)

= -3b/2

Answer 2

Step-by-step explanation:

a/b=1/2

2a=b

b=2a

Now, 3(a-b)

=3(a-2a)

=3(-a)

=-3a or (-3/2)b

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