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15=4x+35+6x
15=10x+35
15-35=10x
-20=10x
-20/10=x
-2=x
-6x + 15 = 4x + 35
15 - 35 = 4x + 6x
- 20 = 10x
- 20/10 = x
- 2 = x
x = - 2
Verificación.
- 6x + 15 = 4x + 35
- 6(- 2) + 15 = 4(- 2) + 35
12 + 15 = - 8 + 35
27 = 27