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a) y= 2t-3x/-2t
y-2t=-3x/:3
(y-2t)/3=-x/*(-1)
(y-2t)/-3=x
b) y= 2/ x-1/*x-1
y*x-1=2/:y
x-1=2/y+1
x=(2/y)+1
c) P= ⅓(a²+2ax)/*3
3P=a²+2ax
3P=a(a+2x)/:a
3P/a=a+2x/-a
(3P/a)-a=2x/:2
[(3P/a)-a]/2=x
Przekształć wzór aby otrzymać "A" :
♥= JAŚ + OLA
♥=A(JŚ+OL)/:(JŚ+OL)
♥/(JŚ+OL)=A