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What is the correct solution to the equation 5 - 2x = -9?

5 - 2x = -9

2 Answers

5 votes
5 - 2x=-9
to start, you must isolate the variable. you would subtract 5 from both sides of the eqauation:
-2x = -14
next you must get rid of that -2 so you would divide each side by -2:
x= 7
User Djidiouf
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3 votes


\: \: \: \: \: \: \: \: \: \: \: \bold{ - 2x = - 9 - 5}


\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \bold{ - 2x = - 14}


\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \bold{x = \cfrac{ - 14}{ - 2}}


\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \bold{x = \cfrac{14}{2} }


\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \bold{x = 7}

Note: For a problem like this, we must first subtract the number that is 5, then we must know that two negatives make a positive and that we must add 9 and 5 to give us 14, then we must put it as a fraction since it makes it easier for us to finish the problem, next it is known that two negative signs make a positive thus eliminating the less Parentheses and finally we divide so that we get a result of
\bold{ x = 7}

User AlfeG
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