7x+5-14 = 28 7x = 28+14-5 7x = 37 x = 37/7 = 5.'285714' recurring
-7x + 5 = -9 -7x = -14 7x = 14 x = 2
7x+17 = 45 7x = 45-17 7x = 28 x = 4
7x + 9 = 51 7x = 42 x = 42/7 = 6
Solution:7x - 7 = 147x = 14 + 77x = 21x = 21/7x = 3Checking:7(3) - 7 = 1421 - 7 = 1414 = 14
7x+5-14 = 28 7x = 28+14-5 7x = 37 x = 37/7 = 5.'285714' recurring
-7x + 5 = -9 -7x = -14 7x = 14 x = 2
7x+17 = 45 7x = 45-17 7x = 28 x = 4
7x + 9 = 51 7x = 42 x = 42/7 = 6
Solution:7x - 7 = 147x = 14 + 77x = 21x = 21/7x = 3Checking:7(3) - 7 = 1421 - 7 = 1414 = 14
7x + y + 3 = y7x + 3 = 07x = -3x = -3/7
the empty set.
7x-4=9x+10-14=2xx=-7
7x+2-2=16-27x = 147x/7 = 14/7x = 2
7x - 9 = 3x + 5 7x - 3x - 9 = 5 7x - 3x = 5 + 9 4x = 14 x = 14/4
5x-3 = 11+12x 5x-12x = 11+3 -7x = 14 x = -2
X=2