Question

alguem me ajudaa pfv​

Answer 1

a) x/2 + x = 180°

$\frac{x + 2x}{2} = 180$

x + 2x = 180.2

3x = 360

x = 360/ 3

x = 120°

b) x+ 70 + x/4 = 180°

$\frac{4x + 280 + x}{4} = 180$

4x + 280 + x = 180 .4

5x = 720 - 280

5x = 440

x = 440/ 5

x = 88°