Answered

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Solve the following equations and check your solution using substitution.

5−x=−2

(BTW can you show the working out for the question)

Sagot :

Paounn

Answer:

[tex]x=7[/tex]

Step-by-step explanation:

We can add the same quantity to both sides of the equations, and still have an equivalent equation. Let's add [tex]x+2[/tex] to both sides, then sum like terms

[tex]5-x +x+2 = -2 +x+2\\5+2 = x\\7=x[/tex]

(this is the rule that allows us to move items from one side do the other of the equal sign by changing its sign)

At this point we have a solution, let's replace it to verify

[tex]5-(7) = -2\\-2=-2[/tex]

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