Answer:
g = 5
Step-by-step explanation:
-2(g-3)=2(g-7)
-2 * g = -2g
-2 * -3 = 6
2 * g = 2g
2 * -7 = -14
-2g + 6 = 2g - 14
-6 -6
-2g = 2g - 20
-2g -2g
-4g = -20
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-4 -4