Respuesta :

patriciashebo
7x-21=49, 49-21= 28/7= x= 4
Supergirl200

Answer:

x = 10

Step-by-step explanation:

- The first thing to do is open parentheses:

7 (x - 3) = 49

7x - 21 = 49

- Then add 21 to each side:

7x - 21 = 49

7x = 70

- Now divide each side by 7:

7x = 70

x = 10

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