Answer:
6
Step-by-step explanation:
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1. 5x-2=3x+4
+2 +2
2. 5x=3x+6
-3x -3x
3. 2x=6
/2 /2
x=3
-9
18÷x = -2
18 = -2×x
18 = -2x
-9 = x
x = -9