# ho to solve question no (b)

Dear student,

make supplementary angles i.e. their sum is 180. so we have;

$x+x+30=180\phantom{\rule{0ex}{0ex}}⇒2x+30=180\phantom{\rule{0ex}{0ex}}⇒2x=180-30\phantom{\rule{0ex}{0ex}}⇒2x=150\phantom{\rule{0ex}{0ex}}⇒x=\frac{150}{2}=75°$
Regards

• 2
x+x+30=180
2x+30=180
2x=180-30
2x=150
x=75

• 2
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