Question

Х
3x
Work out the value of x.
Plz help

Answer 1

$\\ \sf\longmapsto x+90+3x=360$

$\\ \sf\longmapsto 4x+90=360$

$\\ \sf\longmapsto 4x=360-90$

$\\ \sf\longmapsto 4x=270$

$\\ \sf\longmapsto x=\dfrac{270}{4}$

$\\ \sf\longmapsto x=67.5$

Answer 2

x = 67.5°

Step-by-step explanation:

$\begin{aligned}\tt 3x+x&=\tt 270^\circ\\\tt 4x&=\tt 270\\\tt x&=\tt\frac{270}{4}\\\tt x&=\tt\frac{135}{2}\\\tt x&= \underline{\underline{\tt 67.5^\circ}}\end{aligned}$