Question

6x-2x=20


4x+5x=81


12x-7x=-30

ayudaa​

Answer 1

Respuesta:

6x-2x=20

4x= 20

x= 20/4

x= 5

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4x+5x=81

9x = 81

x = 81/9

x = 9

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12x-7x= -30

5x  = -30

x = -30/5

x = -6