1) 2x + 3x + 4 = 145x + 4 = 145x = 10x = 2
2) 7z - z + 5 = 116z + 5 =116z = 6z = 1
3) 8y - 4y - 12 = -504y - 12 = -504y = -38y = -9.5
4) -10 + x + x = -26-10 + 2x = -262x = -16x = -8
5) 10y - 3y - 9 = 407y - 9 = 407y = 49y = 7
6) -y + 8 - 14y = 23-y - 14y = 15-15y = 15y = -1
1) 2x + 3x + 4 = 14
5x + 4 = 14
5x = 10
x = 2
2) 7z - z + 5 = 11
6z + 5 =11
6z = 6
z = 1
3) 8y - 4y - 12 = -50
4y - 12 = -50
4y = -38
y = -9.5
4) -10 + x + x = -26
-10 + 2x = -26
2x = -16
x = -8
5) 10y - 3y - 9 = 40
7y - 9 = 40
7y = 49
y = 7
6) -y + 8 - 14y = 23
-y - 14y = 15
-15y = 15
y = -1