It is: 9m +8 -4m +7 -5m = 15
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
m = -1
It equals 24.
89
It is: 9m +8 -4m +7 -5m = 15
2 - 7n = 6therefore 7n = 2 - 6 = -4 and so n = -4/7 Then 5m + 7n = 6.4 becomes 5m - 4 = 6.4 so that 5m = 10.4 and then m = 10.4/5 = 2.08
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
m = -1
5m+2n, n-3m, 7-3n (5m+2n)+(n-3m)+(7-3n)=2m+7
It equals 24.
96
It doesn't ! -7 plus -5 equals -12 ! -7 plus 5 equals -2
If I am correct, 9 plus 7 equals 112.
89
35
28