Explicación paso a paso:
5x-2x=16+5
3x=21
x=21/3
x=7
5x-2x=40-10
3x=30
x=30/10
x=3
4x-3x=2+3
x=5
6x-5x=5+6
x=11
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Explicación paso a paso:
5x-2x=16+5
3x=21
x=21/3
x=7
5x-2x=40-10
3x=30
x=30/10
x=3
4x-3x=2+3
x=5
6x-5x=5+6
x=11