Respuesta:
Explicación paso a paso:
3n + 9 = 5n + 89
3n + 9 -9 =5n+89 -9
3n = 5n + 80
3n - 5n = 5n +80 -5n
-2n =80
n=-40
5x+4x+15 =10x-2x -26
9x+15=10x-2x-26
9x+15=8x-26
9x+15-15=8x-26-15
9x=8x-41
9x-8x=8x-41-8x
x= -41
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Respuesta:
Explicación paso a paso:
3n + 9 = 5n + 89
3n + 9 -9 =5n+89 -9
3n = 5n + 80
3n - 5n = 5n +80 -5n
-2n =80
n=-40
5x+4x+15 =10x-2x -26
9x+15=10x-2x-26
9x+15=8x-26
9x+15-15=8x-26-15
9x=8x-41
9x-8x=8x-41-8x
x= -41