3x - 12 = 7x + 8
-4x - 12 = 8
-4x - 20
X = -5

1.Set your equations Raquel to each other

2.given

3.subtract 7x from both sides

4. Add 12 to both sides

5.divide both sides by four and you get negative 5

Explanation:

2b2t

explanation:

2b2t

b) nuclear ive learned that in a pedtrodic table