Addition
x + 4 = 25
x=21
x - 2 = 6
x=8
9x = 27
x=3
y/6 = 2
y=12
m + 2.4 = 3.7
m=1.3
a + 13 = 80
a= 67
d - 7 = 9
d=16
7x = 63
x=9
x/4 = 14
x=56
x + 66.09 = 102.8
x=36.71
n + (8) = 14
n=6
x-27=110
x=137
5e = 400
e=80
x/6 = 6
x=36
5.6 = 0.8x
x=7
x + 36 = 100
x=64
x - 327 = 665
x=992
11x = 275
x=25
28 = a/13
a=364
c/0.29 = 5.5
c=1.595
1/2 + x = 1 1/6
x= 2/3
1/2 = 1 1/6 - x
x=2/3
2/3 * k = 5 2/3
k=8 1/2
978/x = 163
x=6
0.12 = y/0.12
y=0.0144