7m2 + 6.5n - 4n + 2.5m2 - n = 9.5m2 + 1.5n
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15m + 4n - 5m + 9n = 10m + 13n
-4n3 + 8n2 - 4n + 7
-2.18
n=10/7. i did this one mentally. but are you sure its 8n minus negative 4n or is it 8n minus 4n? 8n- -4n does not equal 8n-4n 8n- -4n is the same as 8n+4n
In the equation 5n-11=4n+20, n is equal to 31.