Question

Write an equation to show the relationship between a and c when a = b + 9 b = c - 2​

Answer 1

Given:

The equations are:

$a=b+9$

$b=c-2$

To find:

The equation that show the relationship between a and c.

Solution:

We have,

$a=b+9$               ...(i)

$b=c-2$               ...(ii)

Equation (i) can be rewritten as:

$a-9=b$              ...(iii)

From (ii) and (iii), we get

$a-9=c-2$

$a-c=9-2$

$a-c=7$

Therefore, the required equation is $a-c=7$.