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Justify a Solution The expression -3m - [2m + (5 - m)] + 7 was simplified as 2 - 4m. Without simplifying, explain how you can show that it has been simplified correctly.

Respuesta :

samuelonum1

Step-by-step explanation:

Given the expression

[tex]-3m - [2m + (5 - m)] + 7[/tex]

Step one

Firstly we have to open the inner bracket we have

[tex]-3m - [2m + 5 - m] + 7[/tex]

Step two

we proceed further by opening up the next bracket we have

[tex]-3m - 2m -5 +m+ 7[/tex]

Step three

we then have to collect like terms of m and rearrange.

[tex]=-3m - 2m+m -5+ 7\\=-4m+2\\=2-4m[/tex]

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