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Please Help me i'm not good with math

Please Help me i'm not good with math-example-1
User Demarsch
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1 Answer

1 vote
1. x - 5 = 7
+5 +5
x = 12

2. -5 + x = 7
+5 +5
x = 7

3. -7x = 28
/-7. /-7
x = 4

not sure on the last one
User PRVS
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