Question

solve following questions no. 4

Answer 1

Hope it help you
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Answer 2

$\textbf{hey mate! here's your answer!}$
_______________________

since ,

sum of supplementary angles = 180°

so,

(3x + 40) + (x - 20) = 180

open the brackets!

=> 3x + 40 + x - 20 = 180

=> 4x + 20 = 180

take 20 to other side and it is positive, thus, it will become negative, when taken to other side!

=> 4x = 180 - 20

=> 4x = 160

take 4 to other side and since it is multiplying, so it will divide when taken to other side!

=> x = $\frac{\bcancel{160}}{\bcancel{4}}$

$\bold{\boxed{\boxed{=>\: x \:=\: 40}}}$ ....answer

$\texttt{hope you understood!}$

$\mathcal{\bold{\huge{BE \:BRAINLY!}}}$