Question

ayudaaaaaaa por favor ​

Answer 1

Respuesta:

1)

$64 + 63 + x = 180 \\ x = 53$

2)

$30 + x + x = 180 \\ x = 75 \\ 75 + shi = 180 \\ shi = 105$

3)

$60 + 90 + a = 180 \\ a = 30$

4)

$20 + 40 + (180 - a) = 180 \\ a = 60$