pls help i need this done as quick as possible

Answer:
Infinite Solutions.
Step-by-step explanation:
[tex]m+7=3+m+4[/tex]
Subtract m from both sides:
[tex]m+7-m=3+m+4-m[/tex]
[tex]7=3+4[/tex]
[tex]7=7[/tex]
Both sides are equal.
This means that the value of m does not affect the end result of 7 = 7, which is true. Thus, there are infinite solutions as any value of m will still make the equation true.