Question

ayudaaa es para un examen

Answer 1

$\alpha + 120 = 180 \\ \alpha = 60$

$2 \beta + 120 + x = 180 \\ x = 2 \beta + 60$

$7 \beta + x = 180 \\ 7 \beta + ( - 2 \beta + 60) = 180 \\ 5 \beta = 120 \\ \beta = 24$

$\alpha + \beta = 84\\ 60 + 24 = 84$