5/6m-5/2-7/8m+2
7m + 8 =71 7m = 71 - 8 7m = 63 m = 63/7 m = 9
7m
factor by grouping 7m(m-2)+6n(2-m)
7m-5 = 9 7m = 9+5 7m = 14 m = 2
m2-7m-30 = (m+3)(m-10) when factored
7m + 2 = 37 or 7m = 37 - 2 or 7m = 35 So m = 5
Add 10 to each side: 7m = 49 so m = 7
M=-.5
4/7 - 4/m need a common denominator--multiply the first term by m/m and the second by 7/7 4m/7m - 28/7m (4m-28)/7m OR 4/7 - 4/m
5m-7m = 12 -2m = 12 -2m/-2 = 12/-2 m = -6
If 7m = 4n+2 and 7m+2 = 8 m = 6/7 and n = 1
7mx7mx(0.007x1000)m=7mx7mx7m=343m3. Note: 1km = 1000m.