Respuesta :

Answer:

1

Step-by-step explanation:

2a+14-7=9

2a+7=9

-7

2a=2/2

a=1

avachriss

Answer:

a = 1

Step-by-step explanation:

2(a+7)-7=9

distribute: 2a + 14 + -7 = 9

combine like terms: 2a + 7 = 9

subtract 7 from both sides: 2a = 2

a = 1