1:2 :  the ratio of one to two

12/3: 12 divided by 3 equals [is] 4

x + 1: x plus one

(a+b): bracket a plus b bracket closed

x -1: x minus one

x ±1: x plus or minus one

xy: xy; x multiplied by y

(x - y)(x + y): x minus y, x plus y

= : (the equals sign) is equal to; equals

1×1=1: once one is one

2×2=4 :twice two is four

6×5=30 six times [multiplied by] five equals [is equal to; are; makes; make] thirty

30=6×5: thirty is five times as large as six

20:5=16:4:  the ratio of 20 to 5 equals the ratio of 16 to 4; 20 is to 5 as 16 is to 4

72-16=56: 72 minus 16 is [equals; is equal to] 56; 16 from 72 leaves 56

x = 5: x equals 5; x is equal to 5; x is 5

x ≠5 : x (is) not equal to 5

s=v t : s equals [is equal to ] v multiplied by t; s equals v times t

a+b=c : a plus b is [are; equals; is equal to] c

c-b=a: c minus b is [equals; is equal to] a; b from c leaves a

v=s/t; v equals s divided by t; v is s over t

3x=5:  three times x equals 5