Solving by Combining Like Terms
6r + 7 = 13 +7r
r = -6
5 + 6x - 4x = 2x + 8
No solution
13 - 4x = 1 - x
x = 4
38 + 7k = 8(k + 4)
k = 6
4n - 40 = 7(-2n +2)
n = 3
-7x - 3x + 2 = -8x -8
x = 5
4(-8x + 5) = -32x - 26
no solution
3(1 - 3x) = 2(-4x + 7)
x = -11
-3(x-1) + 8(x-3) = 6x + 7 - 5x
x=7
-8n + 4(1 + 5n) = -6n -14
n= -1
-6n - 20 = -2n + 4(1 - 3n)
n = 3
8x + 4(4x-3) = 4(6x+4) - 4
all real numbers