SUBTRACT 4X ON BOTH SIDES TO GET THE VARIABLE ON ONE SIDE
5x+3>4x+7
-4x -4x
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x+3>7
SUBTRACT 3 ON BOTH SIDES TO HAVE THE NUMBERS ON ONE SIDE
x+3>7
-3 -3
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x>4
If you plug in 4 for x you get both sides equaling 23. This proves that x must be greater than 4. (You can treat the inequality sign like an equal sign.)
I hope this helped you.
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