Answered

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Evaluate each expression.(a) a + 4 when a = -9(b) -a + 4 when a = -9

Sagot :

You have to replace the number in the variable:

A.

[tex]a+4[/tex][tex]-9+4[/tex][tex]=-5[/tex]

B.

[tex]-a+4[/tex][tex]-(-9)+4[/tex][tex]9+4[/tex][tex]=13[/tex]

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