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OpenStudy (anonymous):
tell whether the given number is a solution of each equation. -4x+7=15;-2
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OpenStudy (anonymous):
all you have to do is replace x with -2. Testing a solution is just replacing the variable with the given solution.
jhonyy9 (jhonyy9):
-4*(-2)+7=8+7=15 so resulted that is right so -2 is a solution of this equation
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