1) 2x-34=-20
2x=-20+34
2x=+14
x=14/2
x=7
2)9x+8=7x+6
9x-7x=+6-8
2x=-2
x=-2/2
x=-1
Esperoquetesirva....
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1) 2x-34=-20
2x=-20+34
2x=+14
x=14/2
x=7
2)9x+8=7x+6
9x-7x=+6-8
2x=-2
x=-2/2
x=-1
Esperoquetesirva....