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a= x + 20
g= x
⇒x + x +20 = 120
2x + 20 = 120
2x = 100
x = 50
A = 70 y G = 50
ojalá q te ayude!! :)
entonces x+x-20=120
2x=140
x=70
Angie tiene S/.70 y Gloria tiene S/.50