Respuesta :

Answer: [tex]21[/tex]

Add 13 to both sides

[tex]m-13+13=8+13\\m=21[/tex]

Answer:

m=21

Step-by-step explanation:

m-13=8

solve for m

we have to get m by itself

we have to move the 13 over to the eight

remember when you move something to the opposite side of the equal sign the sign changes.In this case the -13 will change to a positive 13

m=13+8

13+8

=21

m=21

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