Answer:
x=-20
Explanation:
-2.5x -10=40
-2.5x -10+10=40+10
-2.5x=50
-2.5x/-2.5=50/-2.5
x = -20
1) Isolate x
-2.5x - 10 = 40
+ 10 + 10
-2.5x = 50
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-2.5 -2.5
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