Simplify 3m^2-3n^2+n+3m^2-7+4

$3 m^{2} - 3 n^{2} + n + 3 m^{2} - 7 + 4$

Step 1

Add $3 m^{2}$ and $3 m^{2}$ .

$6 m^{2} - 3 n^{2} + n - 7 + 4$

Step 2

Add $- 7$ and $4$ .

$6 m^{2} - 3 n^{2} + n - 3$

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