With the help of the diagram, we can find the value of y.
Solution :
We know that,
- Opposite sides of a parallelogram are equal to each other .
So,
As, opposite sides are equal so,
[tex]\qquad\sf{ \dashrightarrow{ 4y {} = y + 39}} [/tex]
Adding (-y) to both sides :
[tex]\qquad\sf{ \dashrightarrow{ 4y + ( - y) {} = y + ( - y) + 39}} [/tex]
[tex]\qquad\sf{ \dashrightarrow{ 3y {} = 39}} [/tex]
Dividing 3 from both sides :
[tex]\qquad\sf{ \dashrightarrow{ \dfrac{3y}{3} {} = \dfrac{39}{3} }} [/tex]
[tex]\qquad{\pmb{ \bf{ \dashrightarrow{ y {} = 13}} }}[/tex]
⠀
Therefore, y = 13 .
