Respuesta :

sm03

Answer:

a = -5

Step-by-step explanation:

22 = 7 -3a

(subtract 7)

15 = -3a

(divide -3)

a = -5

OR

22 = 7 -3a

(add 3a)

3a + 22 = 7

(subract 22)

3a = -15

(divide 3)

a = -5
22 = 7 - 3a
3a = -15
a = -5

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