Question

in the given figure find x

Answer 1

Hi friend,

We know that,
x°+31+x°+20+x°=180°
3x°+51°=180°
3x°=180°-51°
3x°=129°
x°=129°/3
x=43°

x+31=43+31=74°
x+20=43+20=73°
x=43°

hope it helps

Answer 2

Hey there !

∠1 = x° + 31
∠2 = x° + 20
∠3 = x°

∠1 + ∠2 + ∠3 = 180° [ Straight angle ]

x° + 31 + x° + 20 + x° = 180°

3x + 51 = 180 °

3x = 180 - 51
3x = 129

x = 129/3

x = 43°