Answer:
The first one is 3x-2=-20. So the - 2 will cross the equal sign making it positive so it will be 3x = -20+2 given you 3x = - 18. You will divide it by 3 given u - 6. So all of them x= - 6
1. 3x -6 + 4 = -20
2. 3x - 2 = -20
3. 3x = -18
4. × = -6
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