4x+1=21
4x= 21-1
4x= 20
x = 20\4
x = 5
x-1=5
x= 5+1
x = 6
16x-16=80
16x= 80+16
16x = 96
x = 96/ 16
Espero que te ayude. Suerte
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4x+1=21
4x= 21-1
4x= 20
x = 20\4
x = 5
x-1=5
x= 5+1
x = 6
16x-16=80
16x= 80+16
16x = 96
x = 96/ 16
x = 6
Espero que te ayude. Suerte