Question

A-b

3
If
which of the following must also be
b
7
true?
Select one:
10
a + b
O a.
b
7
11
O b.
a-2b
b
7
(7
4
O c.
=
b
7
10
O d.
=
=
b
7​

Answer 1

Answer:d

Step-by-step explanation:b=7

a-b=3

=>a=3+7

a=10

Answer 2

`\boxed{\sf d. \ (a)/(b) = (10)/(7)}`

Explanation:

`\sf \implies (a - b)/(b) = (3)/(7) \\ \\ \sf \implies (a)/(b) - (b)/(b) = (3)/(7) \\ \\ \sf \implies (a)/(b) - 1 = (3)/(7) \\ \\ \sf \implies (a)/(b) - 1 + 1 = (3)/(7) + 1 \\ \\ \sf \implies (a)/(b) = (3)/(7) + 1 \\ \\ \sf \implies (a)/(b) = (3)/(7) + (7)/(7) \\ \\ \sf \implies (a)/(b) = (3 + 7)/(7) \\ \\ \sf \implies (a)/(b) = (10)/(7)`