SOLUTION: Tell wheather the given value of the varible is a solution of the equation. -9x+7=25+2(5-x);x=-4. Thank u for all the help!

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Question 59659This question is from textbook Pre-Algebra
: Tell wheather the given value of the varible is a solution of the equation.
-9x+7=25+2(5-x);x=-4.
Thank u for all the help!
This question is from textbook Pre-Algebra

Answer by funmath(2933)   (Show Source): You can put this solution on YOUR website!
Tell wheather the given value of the varible is a solution of the equation.
-9x+7=25+2(5-x);x=-4.
Let x=-4 and see if both sides of the equation equal. If they do then it's a solution, if not it's not:
-9(-4)+7=25+2(5-(-4))?
36+7=25+2(5+4)?
36+7=25+2(9)
43=25+18
43=43!!!
Yes it is.
Happy Calculating!!!

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