Question

solving with variables on both sides:
7m+8m = -10+5m
(show checking step for the following)
5k+1 = 3k+k-3.8
12+7x = 14.2+9x+1.8

Answer 1

7m + 8m = -10 + 5m
15m= -10 + 5m
10m= -10
m= -1

Answer 2

5k + 1 = 3k + k -3.8
k= -4.8

Answer 3

12+ 7x = 14.2 + 9x + 1.8
-4 = 2x
x= -2

Answer 4

@helpmehelpyou, how did you get the answer for the second question?