Question: help? don't know what i'm doing at all and have a test to study for tmr 7 3x + 5V = 11 3x + 2V

help? don't know what i'm doing at all and have a test to study for tmr

help? don't know what i'm doing at all and have a test

7 3x + 5V = 11 3x + 2V = -4

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