Question

D.Nas figuras a seguir, as retas r e s são paralelas. Calcule x.
a)
3x – 15°
72°
S
b)
54°
S
44-2°​

Answer 1

Explicação passo-a-passo:

a) $\sf 3x-15^{\circ}=72^{\circ}$

$\sf 3x=72^{\circ}+15^{\circ}$

$\sf 3x=87^{\circ}$

$\sf x=\dfrac{87^{\circ}}{3}$

$\sf x=29^{\circ}$

b) $\sf 4x-2^{\circ}+54^{\circ}=180^{\circ}$

$\sf 4x+52^{\circ}=180^{\circ}$

$\sf 4x=180^{\circ}-52^{\circ}$

$\sf 4x=128^{\circ}$

$\sf x=\dfrac{128^{\circ}}{4}$

$\sf x=32^{\circ}$