Question

Please help me with this??

Answer 1

19)

`90 = 21x + 6\\-21x = 6 - 90\\-21x = -84\\x = 4`

20)

`75 = 11x - 2\\-11x = -2 - 75\\-11x = -77\\x = 7`

21)

`60 = 8x - 4\\-8x = -4 - 60\\-8x = -64\\x = 8`

22)

`132 = x + 139\\-x = 139 - 132\\-x = 7\\x = -7`

23)

`-1 + 14x = 12x + 17\\14x - 12x = 17 + 1\\2x = 18\\x = 9`

24)

`23x - 5 = 21x + 5\\23x - 21x = 5 + 5\\2x = 10\\x = 5`