Very simple ~
(Graphic Example 3)
S=a.a or the square of a (small 2 can't be typed out) S= area.
C=a.4 or 4a, and c = circumference.
The square area is the square of s = a * a = a
The circumference of a square is C=a*4=4a.
(Balance Example 3)
Police+Super = Today
x+0.64= 14. 14
X+0.64-0.64 (balance principle) = 14. 14-0.64.
X= 13.5 (slightly complicated equation example 3) x+2.4x=5. 1.
Solution: (1+2.4)x=5. 1 indicates the distribution law of 1x+2.4x=5. 1
3x=5. 1 indicates the sum of 1+2.4.
3x*3=5. 1*3 (no division sign, only *) This is the principle of balance and should be understood.
X= 1.5
Note: The equal sign may be crooked.