Explicación paso a paso:
1.alpha +beta=180
alpha = 2beta
alpha + beta = 180
2 beta + beta = 180
3 beta = 180
beta = 60
alpha = 2 beta
alpha = 2(60)
alpha = 120
2. alpha = beta
alpha + beta = 90
beta + beta = 90
2 beta = 90
beta = 45
alpha = 45
3. alpha + beta = 180
alpha = 3 beta - 10
3 beta - 10 + beta = 180
4 beta - 10 = 180
4 beta = 190
beta = 47.5
alpha + 47.5 = = 180
alpha = 132.5
4.alpha=4beta+20
alpha + beta=90
4beta+20 +beta=90
5beta=70
beta=14
alpha=4beta+20
alpha= 4(14)+20
alpha =76
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Explicación paso a paso:
1.alpha +beta=180
alpha = 2beta
alpha + beta = 180
2 beta + beta = 180
3 beta = 180
beta = 60
alpha = 2 beta
alpha = 2(60)
alpha = 120
2. alpha = beta
alpha + beta = 90
beta + beta = 90
2 beta = 90
beta = 45
alpha = 45
3. alpha + beta = 180
alpha = 3 beta - 10
alpha + beta = 180
3 beta - 10 + beta = 180
4 beta - 10 = 180
4 beta = 190
beta = 47.5
alpha + 47.5 = = 180
alpha = 132.5
4.alpha=4beta+20
alpha + beta=90
4beta+20 +beta=90
5beta=70
beta=14
alpha=4beta+20
alpha= 4(14)+20
alpha =76