急!!!請教教一下!!要有步驟!!(解一次元方程進一步)

8y = 6y+6
8y - 6y - 6 = 0
2y - 6 = 0

2z+2 = 3z -12
2z - 3z + 2 +12 = 0
-z + 14 = 0
z - 14 = 0

4n - 5 = 3n
4n - 3n - 5 = 0
n - 5 = 0

2x = 3 - 3x - x - 1
2x + 3x + x - 3 + 1 = 0
6x - 2 = 0

T/4 + T/4 = 1
2T/4 = 1
2T = 1 * 4
2T - 4 = 0

X/5 - 2X/15 = 3
3X/15 - 2X/15 = 3
X/15 = 3
X = 3*15
X - 45 = 0

K/30 + 5 = K/10
K/30 - K/10 = -5
K/30 - 3K/30 = -5
-2K/30 = -5
2K = 150
2K -150 = 0

Y/6 = 6 - 4Y/3
Y/6 + 4Y/3 = 6
Y/6 + 8Y/6 = 6
9Y/6 = 6
9Y = 36
9Y - 36 = 0

+ = 加, - = 減, * = 乘, / = 除

1)
8y = 6(y+1)
8y = 6y + 6
8y - 6y = 6y + 6 - 6y
2y = 6
2y / 2 = 6 / 2
y = 3

2)
2(z+1)=3(z-4)
2z + 2 = 3z - 12
2z + 2 - 2z + 12 = 3z - 12 - 2z + 12
14 = z
z = 14

3)
5(0.8n-1)=3n
4n - 5 = 3n
4n - 5 - 3n + 5 = 3n - 3n + 5
n = 5

4)
2x=3(1-x) - (x+1)
2x = 3 - 3x - x - 1
2x = 2 - 4x
2x + 4x = 2 - 4x + 4x
6x = 2
6x / 6 = 2 / 6
x = 1 / 3

5)
四份之t加四份之t等於一
t / 4 + t / 4 = 1
4(t / 4 + t / 4) = 1 * 4
t + t = 4
2t = 4
2t / 2 = 4 / 2
t = 2

6)
五份之x - 15份之2x等於3
x / 5 - 2x / 15 = 3
15(x / 5 - 2x / 15) = 3 * 15
3x - 2x = 45
x = 45

7)
30份之k加5等於10份之k
k / 30 + 5 = k / 10
30(k / 30 + 5) = 30(k / 10)
k + 150 = 3k
k + 150 - k = 3k - k
150 = 2k
75 = k
k = 75

8)
6份之y等於 6 - 3份之4y
y / 6 = 6 - 4y / 3
6(y / 6) = 6(6 - 4y / 3)
y = 36 - 8y
y + 8y = 36 - 8y + 8y
9y = 36
9y / 9 = 36 / 9
y = 4