Question

Julie has 3 boxes of pens. The diagram shows expressions for the number of pens in each box. a=b+12 b=c+4 write an EQUATION to show the relationship between A and B

Answer 1

Given:

    $a = b+12$

     $b = c+4$

 Here we find write an equation to show the relationsip between a and c.

   $a = b+12 \longrightarrow (1)$

    $b = c+4 \longrightarrow (2)$

  from equation $(1)$ and $(2)$

    $a = c+4+12$

    $a = c+16$

    $a-c = 16$

Answer 2

Given:

Julie has $3$ boxes of pens.

The equations for the number of pens in each box are:

$a=b+12$

$b=c+4$

We have to find the equation to show the relation between $a,c$.

replace equation $b=c+4$ in equation $a=b+12$:

We get:

$a=c+4+12$

$a=c+16$

Therefore, the relation between $a,c$ is $a=c+16$.