∠( 2x + 36 ) and ∠4x are interior angles on the same side of transversal, which means their sum will add up to 180° .
Which means :-
![= 2x + 36 + 4x = 180](https://img.qammunity.org/2021/formulas/mathematics/college/7xcsq32b5gc1y8urcuc65rggbjpri3ke21.png)
![= 6x + 36 = 180](https://img.qammunity.org/2021/formulas/mathematics/college/fgoehd9t18oakr3p6kypztn8wbqudbscgl.png)
![= 6x = 180 - 36](https://img.qammunity.org/2021/formulas/mathematics/college/v5lfm5f4kjqyllrp84qs2z2f56nqekqmt7.png)
![= 6x = 144](https://img.qammunity.org/2021/formulas/mathematics/college/gqx9glosad22dfc0ie2im6iyx5pot9ip6m.png)
![= x = (144)/(6)](https://img.qammunity.org/2021/formulas/mathematics/college/4znf6ruge4fuin7skcsew2ame7kim3shl7.png)
![\hookrightarrow\color{hotpink} x = \color{hotpink}24](https://img.qammunity.org/2021/formulas/mathematics/college/c80peem7nhhzl5y1kydt9t512ujrhs5koc.png)
To find whether or not we have found out the correct value of x, let us place 24 in the place of x :-
![= 2x + 36](https://img.qammunity.org/2021/formulas/mathematics/college/sw1a7tmnm3roqukr1x0hl3eoefhkduzch0.png)
![= 2 * 24 + 36](https://img.qammunity.org/2021/formulas/mathematics/college/bo7yhfo0l7zuyt13ymcdmovcwzrpnfw2vs.png)
![= 48 + 36](https://img.qammunity.org/2021/formulas/mathematics/college/ikgnw1d69yrjv56csuxc2kjn6l4q3anf6a.png)
![\color{olive}∠(2x + 36) =\color{hotpink} 84°](https://img.qammunity.org/2021/formulas/mathematics/college/rl28xjkoz5y5f96cz0ulj3n4neai0f2q6i.png)
Then :-
![= 4x](https://img.qammunity.org/2021/formulas/mathematics/college/pk8zo6n81fy2luzv1t5jxde57hxx6nnk9m.png)
![= 4 * 24](https://img.qammunity.org/2021/formulas/mathematics/college/avp3kyypjrebdkyhs266fyj0kahuowpsf0.png)
![\color{olive}∠4x =\color{hotpink} 96°](https://img.qammunity.org/2021/formulas/mathematics/college/cphx31njtv3rxl272qohibpz206nz8zwrw.png)
As , the sum of both these angles are adding upto 180° (84+96=180) , we can conclude that we have found out the correct value of x .
Therefore, the value of :-
![\boxed{\color{olive}x \: \:\bold{\color{hotpink} = 24}}](https://img.qammunity.org/2021/formulas/mathematics/college/16soer2rcqy1kcq2xnheistt9uqyh0p3p3.png)