1) 2x+5=9
2x=9-5
2x= 4
x=4/2
x=2
2) 7x-5=2
7x=2+5
7x= 7
x=7/7
x=1
3) 96-y=42
96-42=y
54=y
espero que te sirva...
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1) 2x+5=9
2x=9-5
2x= 4
x=4/2
x=2
2) 7x-5=2
7x=2+5
7x= 7
x=7/7
x=1
3) 96-y=42
96-42=y
54=y
espero que te sirva...