– 4x – 21 = – 7x – 3
– 4x + 7x = – 3 + 21
3x = 18
x = 6
7(3x-4)-5=9
21x – 28 – 5 = 9
21x = 9 + 5 + 28
21x = 42
x = 2
5x+4=3(6x+5)+2
5x + 4 = 18x + 15 + 2
5x – 18x = 2 + 15 – 4
-13x = 13
x = -1
6(2x-3)-2(7x-4)=23
12x – 18 – 14x + 8 = 23
12x – 14x = 23 – 8 + 18
-2x = 33
x = -16.5
– 4x – 21 = – 7x – 3
– 4x + 7x = – 3 + 21
3x = 18
x = 6
7(3x-4)-5=9
21x – 28 – 5 = 9
21x = 9 + 5 + 28
21x = 42
x = 2
5x+4=3(6x+5)+2
5x + 4 = 18x + 15 + 2
5x – 18x = 2 + 15 – 4
-13x = 13
x = -1
6(2x-3)-2(7x-4)=23
12x – 18 – 14x + 8 = 23
12x – 14x = 23 – 8 + 18
-2x = 33
x = -16.5