識唔識做中一ge數學??help me 啦!!thank!!!10分!!!!!

其實題題都差唔多,
先通分, 再以天秤法則運算便ok的呀,
舉例:
x/2+x/3=5
3x/6+2x/6=5 (先找2,3旳公分母---> 6)
(要記住, 分母乘大咗幾倍, 分子都要乘大返咁多倍黎 平行返)
3x+2x/6 =5
5x/6=5
5x=5*6
x=30/5
x=6

1.x/2+x/3=5

5x/6 = 5
5x = 30
x = 6

2.y/5-y/3=2

-2y/15 = 2
-2y = 30
y = -15

3.z+2/4+z/2=5

z + 1/2 + z/2 = 5
z(1+1/2) = 5 - 1/2
z = 3

4.t-1/2-t/7=-3

t(1-1/7) = -3 +1/2
t = (-5/2)/(6/7)
t = -35/12

5.m/6+5/6=5

(m+5)/6 = 5
m+5 = 30
m = 25

6.m/2+m/7=9

9m/14 = 9
m/14 = 1
m = 14

7.3a/4-a/2=-3

(3a-2a)/4 = -3
a = -12

8.5/6p= p/3+14

p(5/6-1/3) = 14
p = 14 / (1/2)
p = 28

9.x/4-x+1/8=2

x(1/4-1) = 15/8
x = (15/8)/-3/4
x = -5/2

10.2c-9/6-1/2=0

2c - 3/2 -1/2 =0
2c- 1 =0
2c = 1
c = 1/2

11.d/2-6=d/5-3

d/2 - d/5 = -3 +6
3d/10 = 3
d/10 =1
d = 10

12.k/7+4=2k+1/3

k/7 -2k = 1/3 -4
k (1/7-2) = -11/3
k = (-11/3) / (-13/7)
k = 77/39

sorry that i can't convert all the numbers to a proper fraction.
please convert it yourself.