-7m - 3m + 5m = -5m
Gather the m's and n's by rewriting it. 7m - 11n - n + 5m 7m + 5m -11n - n (7m + 5m) + (-11n - n) 12m - 12n ■
5m Check: 5+5+7+7 = 24m
5m-7m = 12 -2m = 12 -2m/-2 = 12/-2 m = -6
Hcucugi
35 m2
A = 1/2bh 1/2 * 5 * 7 = 17.5m2
5m-12n
-(4m + 3)(5m - 2)
I think there is a missing operator in your question; I will guess you mean 5m + 7m - 3 = 33, because that has a nice round answer. First, add 3 to each side: 5m + 7m = 36 Then, simplify the left side: 12m = 36 Finally, divide both sides by 12: m = 3
35m2
5m = 7 + 4msubtract 4m from both sides1m = 7m = 7=================================Oops. That first solution lost the '8' from the left side.An attempt to check the given equation with "m=7" fails.Try it like this:5m + 8 = 7 + 4mSubtract 4m from each side:m + 8 = 7Subtract 8 from each side:m = -1